1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2013 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "gdb_string.h"
35 #include "gdb_assert.h"
37 #include "exceptions.h"
38 #include "target-descriptions.h"
39 #include "gdbthread.h"
42 #include "inline-frame.h"
43 #include "tracepoint.h"
44 #include "gdb/fileio.h"
47 static void target_info (char *, int);
49 static void default_terminal_info (const char *, int);
51 static int default_watchpoint_addr_within_range (struct target_ops
*,
52 CORE_ADDR
, CORE_ADDR
, int);
54 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
56 static void tcomplain (void) ATTRIBUTE_NORETURN
;
58 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
60 static int return_zero (void);
62 static int return_one (void);
64 static int return_minus_one (void);
66 void target_ignore (void);
68 static void target_command (char *, int);
70 static struct target_ops
*find_default_run_target (char *);
72 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
73 enum target_object object
,
74 const char *annex
, gdb_byte
*readbuf
,
75 const gdb_byte
*writebuf
,
76 ULONGEST offset
, LONGEST len
);
78 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
79 enum target_object object
,
80 const char *annex
, gdb_byte
*readbuf
,
81 const gdb_byte
*writebuf
,
82 ULONGEST offset
, LONGEST len
);
84 static LONGEST
target_xfer_partial (struct target_ops
*ops
,
85 enum target_object object
,
87 void *readbuf
, const void *writebuf
,
88 ULONGEST offset
, LONGEST len
);
90 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
93 static void init_dummy_target (void);
95 static struct target_ops debug_target
;
97 static void debug_to_open (char *, int);
99 static void debug_to_prepare_to_store (struct regcache
*);
101 static void debug_to_files_info (struct target_ops
*);
103 static int debug_to_insert_breakpoint (struct gdbarch
*,
104 struct bp_target_info
*);
106 static int debug_to_remove_breakpoint (struct gdbarch
*,
107 struct bp_target_info
*);
109 static int debug_to_can_use_hw_breakpoint (int, int, int);
111 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
112 struct bp_target_info
*);
114 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
115 struct bp_target_info
*);
117 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
118 struct expression
*);
120 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
121 struct expression
*);
123 static int debug_to_stopped_by_watchpoint (void);
125 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
127 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
128 CORE_ADDR
, CORE_ADDR
, int);
130 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
132 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
133 struct expression
*);
135 static void debug_to_terminal_init (void);
137 static void debug_to_terminal_inferior (void);
139 static void debug_to_terminal_ours_for_output (void);
141 static void debug_to_terminal_save_ours (void);
143 static void debug_to_terminal_ours (void);
145 static void debug_to_load (char *, int);
147 static int debug_to_can_run (void);
149 static void debug_to_stop (ptid_t
);
151 /* Pointer to array of target architecture structures; the size of the
152 array; the current index into the array; the allocated size of the
154 struct target_ops
**target_structs
;
155 unsigned target_struct_size
;
156 unsigned target_struct_allocsize
;
157 #define DEFAULT_ALLOCSIZE 10
159 /* The initial current target, so that there is always a semi-valid
162 static struct target_ops dummy_target
;
164 /* Top of target stack. */
166 static struct target_ops
*target_stack
;
168 /* The target structure we are currently using to talk to a process
169 or file or whatever "inferior" we have. */
171 struct target_ops current_target
;
173 /* Command list for target. */
175 static struct cmd_list_element
*targetlist
= NULL
;
177 /* Nonzero if we should trust readonly sections from the
178 executable when reading memory. */
180 static int trust_readonly
= 0;
182 /* Nonzero if we should show true memory content including
183 memory breakpoint inserted by gdb. */
185 static int show_memory_breakpoints
= 0;
187 /* These globals control whether GDB attempts to perform these
188 operations; they are useful for targets that need to prevent
189 inadvertant disruption, such as in non-stop mode. */
191 int may_write_registers
= 1;
193 int may_write_memory
= 1;
195 int may_insert_breakpoints
= 1;
197 int may_insert_tracepoints
= 1;
199 int may_insert_fast_tracepoints
= 1;
203 /* Non-zero if we want to see trace of target level stuff. */
205 static unsigned int targetdebug
= 0;
207 show_targetdebug (struct ui_file
*file
, int from_tty
,
208 struct cmd_list_element
*c
, const char *value
)
210 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
213 static void setup_target_debug (void);
215 /* The option sets this. */
216 static int stack_cache_enabled_p_1
= 1;
217 /* And set_stack_cache_enabled_p updates this.
218 The reason for the separation is so that we don't flush the cache for
219 on->on transitions. */
220 static int stack_cache_enabled_p
= 1;
222 /* This is called *after* the stack-cache has been set.
223 Flush the cache for off->on and on->off transitions.
224 There's no real need to flush the cache for on->off transitions,
225 except cleanliness. */
228 set_stack_cache_enabled_p (char *args
, int from_tty
,
229 struct cmd_list_element
*c
)
231 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
232 target_dcache_invalidate ();
234 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
238 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
239 struct cmd_list_element
*c
, const char *value
)
241 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
244 /* Cache of memory operations, to speed up remote access. */
245 static DCACHE
*target_dcache
;
247 /* Invalidate the target dcache. */
250 target_dcache_invalidate (void)
252 dcache_invalidate (target_dcache
);
255 /* The user just typed 'target' without the name of a target. */
258 target_command (char *arg
, int from_tty
)
260 fputs_filtered ("Argument required (target name). Try `help target'\n",
264 /* Default target_has_* methods for process_stratum targets. */
267 default_child_has_all_memory (struct target_ops
*ops
)
269 /* If no inferior selected, then we can't read memory here. */
270 if (ptid_equal (inferior_ptid
, null_ptid
))
277 default_child_has_memory (struct target_ops
*ops
)
279 /* If no inferior selected, then we can't read memory here. */
280 if (ptid_equal (inferior_ptid
, null_ptid
))
287 default_child_has_stack (struct target_ops
*ops
)
289 /* If no inferior selected, there's no stack. */
290 if (ptid_equal (inferior_ptid
, null_ptid
))
297 default_child_has_registers (struct target_ops
*ops
)
299 /* Can't read registers from no inferior. */
300 if (ptid_equal (inferior_ptid
, null_ptid
))
307 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
309 /* If there's no thread selected, then we can't make it run through
311 if (ptid_equal (the_ptid
, null_ptid
))
319 target_has_all_memory_1 (void)
321 struct target_ops
*t
;
323 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
324 if (t
->to_has_all_memory (t
))
331 target_has_memory_1 (void)
333 struct target_ops
*t
;
335 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
336 if (t
->to_has_memory (t
))
343 target_has_stack_1 (void)
345 struct target_ops
*t
;
347 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
348 if (t
->to_has_stack (t
))
355 target_has_registers_1 (void)
357 struct target_ops
*t
;
359 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
360 if (t
->to_has_registers (t
))
367 target_has_execution_1 (ptid_t the_ptid
)
369 struct target_ops
*t
;
371 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
372 if (t
->to_has_execution (t
, the_ptid
))
379 target_has_execution_current (void)
381 return target_has_execution_1 (inferior_ptid
);
384 /* Add possible target architecture T to the list and add a new
385 command 'target T->to_shortname'. Set COMPLETER as the command's
386 completer if not NULL. */
389 add_target_with_completer (struct target_ops
*t
,
390 completer_ftype
*completer
)
392 struct cmd_list_element
*c
;
394 /* Provide default values for all "must have" methods. */
395 if (t
->to_xfer_partial
== NULL
)
396 t
->to_xfer_partial
= default_xfer_partial
;
398 if (t
->to_has_all_memory
== NULL
)
399 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
401 if (t
->to_has_memory
== NULL
)
402 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
404 if (t
->to_has_stack
== NULL
)
405 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
407 if (t
->to_has_registers
== NULL
)
408 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
410 if (t
->to_has_execution
== NULL
)
411 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
415 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
416 target_structs
= (struct target_ops
**) xmalloc
417 (target_struct_allocsize
* sizeof (*target_structs
));
419 if (target_struct_size
>= target_struct_allocsize
)
421 target_struct_allocsize
*= 2;
422 target_structs
= (struct target_ops
**)
423 xrealloc ((char *) target_structs
,
424 target_struct_allocsize
* sizeof (*target_structs
));
426 target_structs
[target_struct_size
++] = t
;
428 if (targetlist
== NULL
)
429 add_prefix_cmd ("target", class_run
, target_command
, _("\
430 Connect to a target machine or process.\n\
431 The first argument is the type or protocol of the target machine.\n\
432 Remaining arguments are interpreted by the target protocol. For more\n\
433 information on the arguments for a particular protocol, type\n\
434 `help target ' followed by the protocol name."),
435 &targetlist
, "target ", 0, &cmdlist
);
436 c
= add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
,
438 if (completer
!= NULL
)
439 set_cmd_completer (c
, completer
);
442 /* Add a possible target architecture to the list. */
445 add_target (struct target_ops
*t
)
447 add_target_with_completer (t
, NULL
);
453 add_deprecated_target_alias (struct target_ops
*t
, char *alias
)
455 struct cmd_list_element
*c
;
458 /* If we use add_alias_cmd, here, we do not get the deprecated warning,
460 c
= add_cmd (alias
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
461 alt
= xstrprintf ("target %s", t
->to_shortname
);
462 deprecate_cmd (c
, alt
);
475 struct target_ops
*t
;
477 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
478 if (t
->to_kill
!= NULL
)
481 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
491 target_load (char *arg
, int from_tty
)
493 target_dcache_invalidate ();
494 (*current_target
.to_load
) (arg
, from_tty
);
498 target_create_inferior (char *exec_file
, char *args
,
499 char **env
, int from_tty
)
501 struct target_ops
*t
;
503 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
505 if (t
->to_create_inferior
!= NULL
)
507 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
509 fprintf_unfiltered (gdb_stdlog
,
510 "target_create_inferior (%s, %s, xxx, %d)\n",
511 exec_file
, args
, from_tty
);
516 internal_error (__FILE__
, __LINE__
,
517 _("could not find a target to create inferior"));
521 target_terminal_inferior (void)
523 /* A background resume (``run&'') should leave GDB in control of the
524 terminal. Use target_can_async_p, not target_is_async_p, since at
525 this point the target is not async yet. However, if sync_execution
526 is not set, we know it will become async prior to resume. */
527 if (target_can_async_p () && !sync_execution
)
530 /* If GDB is resuming the inferior in the foreground, install
531 inferior's terminal modes. */
532 (*current_target
.to_terminal_inferior
) ();
536 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
537 struct target_ops
*t
)
539 errno
= EIO
; /* Can't read/write this location. */
540 return 0; /* No bytes handled. */
546 error (_("You can't do that when your target is `%s'"),
547 current_target
.to_shortname
);
553 error (_("You can't do that without a process to debug."));
557 default_terminal_info (const char *args
, int from_tty
)
559 printf_unfiltered (_("No saved terminal information.\n"));
562 /* A default implementation for the to_get_ada_task_ptid target method.
564 This function builds the PTID by using both LWP and TID as part of
565 the PTID lwp and tid elements. The pid used is the pid of the
569 default_get_ada_task_ptid (long lwp
, long tid
)
571 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
574 static enum exec_direction_kind
575 default_execution_direction (void)
577 if (!target_can_execute_reverse
)
579 else if (!target_can_async_p ())
582 gdb_assert_not_reached ("\
583 to_execution_direction must be implemented for reverse async");
586 /* Go through the target stack from top to bottom, copying over zero
587 entries in current_target, then filling in still empty entries. In
588 effect, we are doing class inheritance through the pushed target
591 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
592 is currently implemented, is that it discards any knowledge of
593 which target an inherited method originally belonged to.
594 Consequently, new new target methods should instead explicitly and
595 locally search the target stack for the target that can handle the
599 update_current_target (void)
601 struct target_ops
*t
;
603 /* First, reset current's contents. */
604 memset (¤t_target
, 0, sizeof (current_target
));
606 #define INHERIT(FIELD, TARGET) \
607 if (!current_target.FIELD) \
608 current_target.FIELD = (TARGET)->FIELD
610 for (t
= target_stack
; t
; t
= t
->beneath
)
612 INHERIT (to_shortname
, t
);
613 INHERIT (to_longname
, t
);
615 /* Do not inherit to_open. */
616 /* Do not inherit to_close. */
617 /* Do not inherit to_attach. */
618 INHERIT (to_post_attach
, t
);
619 INHERIT (to_attach_no_wait
, t
);
620 /* Do not inherit to_detach. */
621 /* Do not inherit to_disconnect. */
622 /* Do not inherit to_resume. */
623 /* Do not inherit to_wait. */
624 /* Do not inherit to_fetch_registers. */
625 /* Do not inherit to_store_registers. */
626 INHERIT (to_prepare_to_store
, t
);
627 INHERIT (deprecated_xfer_memory
, t
);
628 INHERIT (to_files_info
, t
);
629 INHERIT (to_insert_breakpoint
, t
);
630 INHERIT (to_remove_breakpoint
, t
);
631 INHERIT (to_can_use_hw_breakpoint
, t
);
632 INHERIT (to_insert_hw_breakpoint
, t
);
633 INHERIT (to_remove_hw_breakpoint
, t
);
634 /* Do not inherit to_ranged_break_num_registers. */
635 INHERIT (to_insert_watchpoint
, t
);
636 INHERIT (to_remove_watchpoint
, t
);
637 /* Do not inherit to_insert_mask_watchpoint. */
638 /* Do not inherit to_remove_mask_watchpoint. */
639 INHERIT (to_stopped_data_address
, t
);
640 INHERIT (to_have_steppable_watchpoint
, t
);
641 INHERIT (to_have_continuable_watchpoint
, t
);
642 INHERIT (to_stopped_by_watchpoint
, t
);
643 INHERIT (to_watchpoint_addr_within_range
, t
);
644 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
645 INHERIT (to_can_accel_watchpoint_condition
, t
);
646 /* Do not inherit to_masked_watch_num_registers. */
647 INHERIT (to_terminal_init
, t
);
648 INHERIT (to_terminal_inferior
, t
);
649 INHERIT (to_terminal_ours_for_output
, t
);
650 INHERIT (to_terminal_ours
, t
);
651 INHERIT (to_terminal_save_ours
, t
);
652 INHERIT (to_terminal_info
, t
);
653 /* Do not inherit to_kill. */
654 INHERIT (to_load
, t
);
655 /* Do no inherit to_create_inferior. */
656 INHERIT (to_post_startup_inferior
, t
);
657 INHERIT (to_insert_fork_catchpoint
, t
);
658 INHERIT (to_remove_fork_catchpoint
, t
);
659 INHERIT (to_insert_vfork_catchpoint
, t
);
660 INHERIT (to_remove_vfork_catchpoint
, t
);
661 /* Do not inherit to_follow_fork. */
662 INHERIT (to_insert_exec_catchpoint
, t
);
663 INHERIT (to_remove_exec_catchpoint
, t
);
664 INHERIT (to_set_syscall_catchpoint
, t
);
665 INHERIT (to_has_exited
, t
);
666 /* Do not inherit to_mourn_inferior. */
667 INHERIT (to_can_run
, t
);
668 /* Do not inherit to_pass_signals. */
669 /* Do not inherit to_program_signals. */
670 /* Do not inherit to_thread_alive. */
671 /* Do not inherit to_find_new_threads. */
672 /* Do not inherit to_pid_to_str. */
673 INHERIT (to_extra_thread_info
, t
);
674 INHERIT (to_thread_name
, t
);
675 INHERIT (to_stop
, t
);
676 /* Do not inherit to_xfer_partial. */
677 INHERIT (to_rcmd
, t
);
678 INHERIT (to_pid_to_exec_file
, t
);
679 INHERIT (to_log_command
, t
);
680 INHERIT (to_stratum
, t
);
681 /* Do not inherit to_has_all_memory. */
682 /* Do not inherit to_has_memory. */
683 /* Do not inherit to_has_stack. */
684 /* Do not inherit to_has_registers. */
685 /* Do not inherit to_has_execution. */
686 INHERIT (to_has_thread_control
, t
);
687 INHERIT (to_can_async_p
, t
);
688 INHERIT (to_is_async_p
, t
);
689 INHERIT (to_async
, t
);
690 INHERIT (to_find_memory_regions
, t
);
691 INHERIT (to_make_corefile_notes
, t
);
692 INHERIT (to_get_bookmark
, t
);
693 INHERIT (to_goto_bookmark
, t
);
694 /* Do not inherit to_get_thread_local_address. */
695 INHERIT (to_can_execute_reverse
, t
);
696 INHERIT (to_execution_direction
, t
);
697 INHERIT (to_thread_architecture
, t
);
698 /* Do not inherit to_read_description. */
699 INHERIT (to_get_ada_task_ptid
, t
);
700 /* Do not inherit to_search_memory. */
701 INHERIT (to_supports_multi_process
, t
);
702 INHERIT (to_supports_enable_disable_tracepoint
, t
);
703 INHERIT (to_supports_string_tracing
, t
);
704 INHERIT (to_trace_init
, t
);
705 INHERIT (to_download_tracepoint
, t
);
706 INHERIT (to_can_download_tracepoint
, t
);
707 INHERIT (to_download_trace_state_variable
, t
);
708 INHERIT (to_enable_tracepoint
, t
);
709 INHERIT (to_disable_tracepoint
, t
);
710 INHERIT (to_trace_set_readonly_regions
, t
);
711 INHERIT (to_trace_start
, t
);
712 INHERIT (to_get_trace_status
, t
);
713 INHERIT (to_get_tracepoint_status
, t
);
714 INHERIT (to_trace_stop
, t
);
715 INHERIT (to_trace_find
, t
);
716 INHERIT (to_get_trace_state_variable_value
, t
);
717 INHERIT (to_save_trace_data
, t
);
718 INHERIT (to_upload_tracepoints
, t
);
719 INHERIT (to_upload_trace_state_variables
, t
);
720 INHERIT (to_get_raw_trace_data
, t
);
721 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
722 INHERIT (to_set_disconnected_tracing
, t
);
723 INHERIT (to_set_circular_trace_buffer
, t
);
724 INHERIT (to_set_trace_buffer_size
, t
);
725 INHERIT (to_set_trace_notes
, t
);
726 INHERIT (to_get_tib_address
, t
);
727 INHERIT (to_set_permissions
, t
);
728 INHERIT (to_static_tracepoint_marker_at
, t
);
729 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
730 INHERIT (to_traceframe_info
, t
);
731 INHERIT (to_use_agent
, t
);
732 INHERIT (to_can_use_agent
, t
);
733 INHERIT (to_augmented_libraries_svr4_read
, t
);
734 INHERIT (to_magic
, t
);
735 INHERIT (to_supports_evaluation_of_breakpoint_conditions
, t
);
736 INHERIT (to_can_run_breakpoint_commands
, t
);
737 /* Do not inherit to_memory_map. */
738 /* Do not inherit to_flash_erase. */
739 /* Do not inherit to_flash_done. */
743 /* Clean up a target struct so it no longer has any zero pointers in
744 it. Some entries are defaulted to a method that print an error,
745 others are hard-wired to a standard recursive default. */
747 #define de_fault(field, value) \
748 if (!current_target.field) \
749 current_target.field = value
752 (void (*) (char *, int))
757 de_fault (to_post_attach
,
760 de_fault (to_prepare_to_store
,
761 (void (*) (struct regcache
*))
763 de_fault (deprecated_xfer_memory
,
764 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
765 struct mem_attrib
*, struct target_ops
*))
767 de_fault (to_files_info
,
768 (void (*) (struct target_ops
*))
770 de_fault (to_insert_breakpoint
,
771 memory_insert_breakpoint
);
772 de_fault (to_remove_breakpoint
,
773 memory_remove_breakpoint
);
774 de_fault (to_can_use_hw_breakpoint
,
775 (int (*) (int, int, int))
777 de_fault (to_insert_hw_breakpoint
,
778 (int (*) (struct gdbarch
*, struct bp_target_info
*))
780 de_fault (to_remove_hw_breakpoint
,
781 (int (*) (struct gdbarch
*, struct bp_target_info
*))
783 de_fault (to_insert_watchpoint
,
784 (int (*) (CORE_ADDR
, int, int, struct expression
*))
786 de_fault (to_remove_watchpoint
,
787 (int (*) (CORE_ADDR
, int, int, struct expression
*))
789 de_fault (to_stopped_by_watchpoint
,
792 de_fault (to_stopped_data_address
,
793 (int (*) (struct target_ops
*, CORE_ADDR
*))
795 de_fault (to_watchpoint_addr_within_range
,
796 default_watchpoint_addr_within_range
);
797 de_fault (to_region_ok_for_hw_watchpoint
,
798 default_region_ok_for_hw_watchpoint
);
799 de_fault (to_can_accel_watchpoint_condition
,
800 (int (*) (CORE_ADDR
, int, int, struct expression
*))
802 de_fault (to_terminal_init
,
805 de_fault (to_terminal_inferior
,
808 de_fault (to_terminal_ours_for_output
,
811 de_fault (to_terminal_ours
,
814 de_fault (to_terminal_save_ours
,
817 de_fault (to_terminal_info
,
818 default_terminal_info
);
820 (void (*) (char *, int))
822 de_fault (to_post_startup_inferior
,
825 de_fault (to_insert_fork_catchpoint
,
828 de_fault (to_remove_fork_catchpoint
,
831 de_fault (to_insert_vfork_catchpoint
,
834 de_fault (to_remove_vfork_catchpoint
,
837 de_fault (to_insert_exec_catchpoint
,
840 de_fault (to_remove_exec_catchpoint
,
843 de_fault (to_set_syscall_catchpoint
,
844 (int (*) (int, int, int, int, int *))
846 de_fault (to_has_exited
,
847 (int (*) (int, int, int *))
849 de_fault (to_can_run
,
851 de_fault (to_extra_thread_info
,
852 (char *(*) (struct thread_info
*))
854 de_fault (to_thread_name
,
855 (char *(*) (struct thread_info
*))
860 current_target
.to_xfer_partial
= current_xfer_partial
;
862 (void (*) (char *, struct ui_file
*))
864 de_fault (to_pid_to_exec_file
,
868 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
870 de_fault (to_thread_architecture
,
871 default_thread_architecture
);
872 current_target
.to_read_description
= NULL
;
873 de_fault (to_get_ada_task_ptid
,
874 (ptid_t (*) (long, long))
875 default_get_ada_task_ptid
);
876 de_fault (to_supports_multi_process
,
879 de_fault (to_supports_enable_disable_tracepoint
,
882 de_fault (to_supports_string_tracing
,
885 de_fault (to_trace_init
,
888 de_fault (to_download_tracepoint
,
889 (void (*) (struct bp_location
*))
891 de_fault (to_can_download_tracepoint
,
894 de_fault (to_download_trace_state_variable
,
895 (void (*) (struct trace_state_variable
*))
897 de_fault (to_enable_tracepoint
,
898 (void (*) (struct bp_location
*))
900 de_fault (to_disable_tracepoint
,
901 (void (*) (struct bp_location
*))
903 de_fault (to_trace_set_readonly_regions
,
906 de_fault (to_trace_start
,
909 de_fault (to_get_trace_status
,
910 (int (*) (struct trace_status
*))
912 de_fault (to_get_tracepoint_status
,
913 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
915 de_fault (to_trace_stop
,
918 de_fault (to_trace_find
,
919 (int (*) (enum trace_find_type
, int, CORE_ADDR
, CORE_ADDR
, int *))
921 de_fault (to_get_trace_state_variable_value
,
922 (int (*) (int, LONGEST
*))
924 de_fault (to_save_trace_data
,
925 (int (*) (const char *))
927 de_fault (to_upload_tracepoints
,
928 (int (*) (struct uploaded_tp
**))
930 de_fault (to_upload_trace_state_variables
,
931 (int (*) (struct uploaded_tsv
**))
933 de_fault (to_get_raw_trace_data
,
934 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
936 de_fault (to_get_min_fast_tracepoint_insn_len
,
939 de_fault (to_set_disconnected_tracing
,
942 de_fault (to_set_circular_trace_buffer
,
945 de_fault (to_set_trace_buffer_size
,
948 de_fault (to_set_trace_notes
,
949 (int (*) (const char *, const char *, const char *))
951 de_fault (to_get_tib_address
,
952 (int (*) (ptid_t
, CORE_ADDR
*))
954 de_fault (to_set_permissions
,
957 de_fault (to_static_tracepoint_marker_at
,
958 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
960 de_fault (to_static_tracepoint_markers_by_strid
,
961 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
963 de_fault (to_traceframe_info
,
964 (struct traceframe_info
* (*) (void))
966 de_fault (to_supports_evaluation_of_breakpoint_conditions
,
969 de_fault (to_can_run_breakpoint_commands
,
972 de_fault (to_use_agent
,
975 de_fault (to_can_use_agent
,
978 de_fault (to_augmented_libraries_svr4_read
,
981 de_fault (to_execution_direction
, default_execution_direction
);
985 /* Finally, position the target-stack beneath the squashed
986 "current_target". That way code looking for a non-inherited
987 target method can quickly and simply find it. */
988 current_target
.beneath
= target_stack
;
991 setup_target_debug ();
994 /* Push a new target type into the stack of the existing target accessors,
995 possibly superseding some of the existing accessors.
997 Rather than allow an empty stack, we always have the dummy target at
998 the bottom stratum, so we can call the function vectors without
1002 push_target (struct target_ops
*t
)
1004 struct target_ops
**cur
;
1006 /* Check magic number. If wrong, it probably means someone changed
1007 the struct definition, but not all the places that initialize one. */
1008 if (t
->to_magic
!= OPS_MAGIC
)
1010 fprintf_unfiltered (gdb_stderr
,
1011 "Magic number of %s target struct wrong\n",
1013 internal_error (__FILE__
, __LINE__
,
1014 _("failed internal consistency check"));
1017 /* Find the proper stratum to install this target in. */
1018 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1020 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
1024 /* If there's already targets at this stratum, remove them. */
1025 /* FIXME: cagney/2003-10-15: I think this should be popping all
1026 targets to CUR, and not just those at this stratum level. */
1027 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
1029 /* There's already something at this stratum level. Close it,
1030 and un-hook it from the stack. */
1031 struct target_ops
*tmp
= (*cur
);
1033 (*cur
) = (*cur
)->beneath
;
1034 tmp
->beneath
= NULL
;
1038 /* We have removed all targets in our stratum, now add the new one. */
1039 t
->beneath
= (*cur
);
1042 update_current_target ();
1045 /* Remove a target_ops vector from the stack, wherever it may be.
1046 Return how many times it was removed (0 or 1). */
1049 unpush_target (struct target_ops
*t
)
1051 struct target_ops
**cur
;
1052 struct target_ops
*tmp
;
1054 if (t
->to_stratum
== dummy_stratum
)
1055 internal_error (__FILE__
, __LINE__
,
1056 _("Attempt to unpush the dummy target"));
1058 /* Look for the specified target. Note that we assume that a target
1059 can only occur once in the target stack. */
1061 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1067 /* If we don't find target_ops, quit. Only open targets should be
1072 /* Unchain the target. */
1074 (*cur
) = (*cur
)->beneath
;
1075 tmp
->beneath
= NULL
;
1077 update_current_target ();
1079 /* Finally close the target. Note we do this after unchaining, so
1080 any target method calls from within the target_close
1081 implementation don't end up in T anymore. */
1090 target_close (target_stack
); /* Let it clean up. */
1091 if (unpush_target (target_stack
) == 1)
1094 fprintf_unfiltered (gdb_stderr
,
1095 "pop_target couldn't find target %s\n",
1096 current_target
.to_shortname
);
1097 internal_error (__FILE__
, __LINE__
,
1098 _("failed internal consistency check"));
1102 pop_all_targets_above (enum strata above_stratum
)
1104 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1106 target_close (target_stack
);
1107 if (!unpush_target (target_stack
))
1109 fprintf_unfiltered (gdb_stderr
,
1110 "pop_all_targets couldn't find target %s\n",
1111 target_stack
->to_shortname
);
1112 internal_error (__FILE__
, __LINE__
,
1113 _("failed internal consistency check"));
1120 pop_all_targets (void)
1122 pop_all_targets_above (dummy_stratum
);
1125 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1128 target_is_pushed (struct target_ops
*t
)
1130 struct target_ops
**cur
;
1132 /* Check magic number. If wrong, it probably means someone changed
1133 the struct definition, but not all the places that initialize one. */
1134 if (t
->to_magic
!= OPS_MAGIC
)
1136 fprintf_unfiltered (gdb_stderr
,
1137 "Magic number of %s target struct wrong\n",
1139 internal_error (__FILE__
, __LINE__
,
1140 _("failed internal consistency check"));
1143 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1150 /* Using the objfile specified in OBJFILE, find the address for the
1151 current thread's thread-local storage with offset OFFSET. */
1153 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1155 volatile CORE_ADDR addr
= 0;
1156 struct target_ops
*target
;
1158 for (target
= current_target
.beneath
;
1160 target
= target
->beneath
)
1162 if (target
->to_get_thread_local_address
!= NULL
)
1167 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ()))
1169 ptid_t ptid
= inferior_ptid
;
1170 volatile struct gdb_exception ex
;
1172 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1176 /* Fetch the load module address for this objfile. */
1177 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch (),
1179 /* If it's 0, throw the appropriate exception. */
1181 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1182 _("TLS load module not found"));
1184 addr
= target
->to_get_thread_local_address (target
, ptid
,
1187 /* If an error occurred, print TLS related messages here. Otherwise,
1188 throw the error to some higher catcher. */
1191 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1195 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1196 error (_("Cannot find thread-local variables "
1197 "in this thread library."));
1199 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1200 if (objfile_is_library
)
1201 error (_("Cannot find shared library `%s' in dynamic"
1202 " linker's load module list"), objfile
->name
);
1204 error (_("Cannot find executable file `%s' in dynamic"
1205 " linker's load module list"), objfile
->name
);
1207 case TLS_NOT_ALLOCATED_YET_ERROR
:
1208 if (objfile_is_library
)
1209 error (_("The inferior has not yet allocated storage for"
1210 " thread-local variables in\n"
1211 "the shared library `%s'\n"
1213 objfile
->name
, target_pid_to_str (ptid
));
1215 error (_("The inferior has not yet allocated storage for"
1216 " thread-local variables in\n"
1217 "the executable `%s'\n"
1219 objfile
->name
, target_pid_to_str (ptid
));
1221 case TLS_GENERIC_ERROR
:
1222 if (objfile_is_library
)
1223 error (_("Cannot find thread-local storage for %s, "
1224 "shared library %s:\n%s"),
1225 target_pid_to_str (ptid
),
1226 objfile
->name
, ex
.message
);
1228 error (_("Cannot find thread-local storage for %s, "
1229 "executable file %s:\n%s"),
1230 target_pid_to_str (ptid
),
1231 objfile
->name
, ex
.message
);
1234 throw_exception (ex
);
1239 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1240 TLS is an ABI-specific thing. But we don't do that yet. */
1242 error (_("Cannot find thread-local variables on this target"));
1248 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1250 /* target_read_string -- read a null terminated string, up to LEN bytes,
1251 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1252 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1253 is responsible for freeing it. Return the number of bytes successfully
1257 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1259 int tlen
, offset
, i
;
1263 int buffer_allocated
;
1265 unsigned int nbytes_read
= 0;
1267 gdb_assert (string
);
1269 /* Small for testing. */
1270 buffer_allocated
= 4;
1271 buffer
= xmalloc (buffer_allocated
);
1276 tlen
= MIN (len
, 4 - (memaddr
& 3));
1277 offset
= memaddr
& 3;
1279 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1282 /* The transfer request might have crossed the boundary to an
1283 unallocated region of memory. Retry the transfer, requesting
1287 errcode
= target_read_memory (memaddr
, buf
, 1);
1292 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1296 bytes
= bufptr
- buffer
;
1297 buffer_allocated
*= 2;
1298 buffer
= xrealloc (buffer
, buffer_allocated
);
1299 bufptr
= buffer
+ bytes
;
1302 for (i
= 0; i
< tlen
; i
++)
1304 *bufptr
++ = buf
[i
+ offset
];
1305 if (buf
[i
+ offset
] == '\000')
1307 nbytes_read
+= i
+ 1;
1314 nbytes_read
+= tlen
;
1323 struct target_section_table
*
1324 target_get_section_table (struct target_ops
*target
)
1326 struct target_ops
*t
;
1329 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1331 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1332 if (t
->to_get_section_table
!= NULL
)
1333 return (*t
->to_get_section_table
) (t
);
1338 /* Find a section containing ADDR. */
1340 struct target_section
*
1341 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1343 struct target_section_table
*table
= target_get_section_table (target
);
1344 struct target_section
*secp
;
1349 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1351 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1357 /* Read memory from the live target, even if currently inspecting a
1358 traceframe. The return is the same as that of target_read. */
1361 target_read_live_memory (enum target_object object
,
1362 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1365 struct cleanup
*cleanup
;
1367 /* Switch momentarily out of tfind mode so to access live memory.
1368 Note that this must not clear global state, such as the frame
1369 cache, which must still remain valid for the previous traceframe.
1370 We may be _building_ the frame cache at this point. */
1371 cleanup
= make_cleanup_restore_traceframe_number ();
1372 set_traceframe_number (-1);
1374 ret
= target_read (current_target
.beneath
, object
, NULL
,
1375 myaddr
, memaddr
, len
);
1377 do_cleanups (cleanup
);
1381 /* Using the set of read-only target sections of OPS, read live
1382 read-only memory. Note that the actual reads start from the
1383 top-most target again.
1385 For interface/parameters/return description see target.h,
1389 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1390 enum target_object object
,
1391 gdb_byte
*readbuf
, ULONGEST memaddr
,
1394 struct target_section
*secp
;
1395 struct target_section_table
*table
;
1397 secp
= target_section_by_addr (ops
, memaddr
);
1399 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1402 struct target_section
*p
;
1403 ULONGEST memend
= memaddr
+ len
;
1405 table
= target_get_section_table (ops
);
1407 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1409 if (memaddr
>= p
->addr
)
1411 if (memend
<= p
->endaddr
)
1413 /* Entire transfer is within this section. */
1414 return target_read_live_memory (object
, memaddr
,
1417 else if (memaddr
>= p
->endaddr
)
1419 /* This section ends before the transfer starts. */
1424 /* This section overlaps the transfer. Just do half. */
1425 len
= p
->endaddr
- memaddr
;
1426 return target_read_live_memory (object
, memaddr
,
1436 /* Perform a partial memory transfer.
1437 For docs see target.h, to_xfer_partial. */
1440 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1441 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1446 struct mem_region
*region
;
1447 struct inferior
*inf
;
1449 /* For accesses to unmapped overlay sections, read directly from
1450 files. Must do this first, as MEMADDR may need adjustment. */
1451 if (readbuf
!= NULL
&& overlay_debugging
)
1453 struct obj_section
*section
= find_pc_overlay (memaddr
);
1455 if (pc_in_unmapped_range (memaddr
, section
))
1457 struct target_section_table
*table
1458 = target_get_section_table (ops
);
1459 const char *section_name
= section
->the_bfd_section
->name
;
1461 memaddr
= overlay_mapped_address (memaddr
, section
);
1462 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1465 table
->sections_end
,
1470 /* Try the executable files, if "trust-readonly-sections" is set. */
1471 if (readbuf
!= NULL
&& trust_readonly
)
1473 struct target_section
*secp
;
1474 struct target_section_table
*table
;
1476 secp
= target_section_by_addr (ops
, memaddr
);
1478 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1481 table
= target_get_section_table (ops
);
1482 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1485 table
->sections_end
,
1490 /* If reading unavailable memory in the context of traceframes, and
1491 this address falls within a read-only section, fallback to
1492 reading from live memory. */
1493 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1495 VEC(mem_range_s
) *available
;
1497 /* If we fail to get the set of available memory, then the
1498 target does not support querying traceframe info, and so we
1499 attempt reading from the traceframe anyway (assuming the
1500 target implements the old QTro packet then). */
1501 if (traceframe_available_memory (&available
, memaddr
, len
))
1503 struct cleanup
*old_chain
;
1505 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1507 if (VEC_empty (mem_range_s
, available
)
1508 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1510 /* Don't read into the traceframe's available
1512 if (!VEC_empty (mem_range_s
, available
))
1514 LONGEST oldlen
= len
;
1516 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1517 gdb_assert (len
<= oldlen
);
1520 do_cleanups (old_chain
);
1522 /* This goes through the topmost target again. */
1523 res
= memory_xfer_live_readonly_partial (ops
, object
,
1524 readbuf
, memaddr
, len
);
1528 /* No use trying further, we know some memory starting
1529 at MEMADDR isn't available. */
1533 /* Don't try to read more than how much is available, in
1534 case the target implements the deprecated QTro packet to
1535 cater for older GDBs (the target's knowledge of read-only
1536 sections may be outdated by now). */
1537 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1539 do_cleanups (old_chain
);
1543 /* Try GDB's internal data cache. */
1544 region
= lookup_mem_region (memaddr
);
1545 /* region->hi == 0 means there's no upper bound. */
1546 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1549 reg_len
= region
->hi
- memaddr
;
1551 switch (region
->attrib
.mode
)
1554 if (writebuf
!= NULL
)
1559 if (readbuf
!= NULL
)
1564 /* We only support writing to flash during "load" for now. */
1565 if (writebuf
!= NULL
)
1566 error (_("Writing to flash memory forbidden in this context"));
1573 if (!ptid_equal (inferior_ptid
, null_ptid
))
1574 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1579 /* The dcache reads whole cache lines; that doesn't play well
1580 with reading from a trace buffer, because reading outside of
1581 the collected memory range fails. */
1582 && get_traceframe_number () == -1
1583 && (region
->attrib
.cache
1584 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1586 if (readbuf
!= NULL
)
1587 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1590 /* FIXME drow/2006-08-09: If we're going to preserve const
1591 correctness dcache_xfer_memory should take readbuf and
1593 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1602 /* If none of those methods found the memory we wanted, fall back
1603 to a target partial transfer. Normally a single call to
1604 to_xfer_partial is enough; if it doesn't recognize an object
1605 it will call the to_xfer_partial of the next target down.
1606 But for memory this won't do. Memory is the only target
1607 object which can be read from more than one valid target.
1608 A core file, for instance, could have some of memory but
1609 delegate other bits to the target below it. So, we must
1610 manually try all targets. */
1614 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1615 readbuf
, writebuf
, memaddr
, reg_len
);
1619 /* We want to continue past core files to executables, but not
1620 past a running target's memory. */
1621 if (ops
->to_has_all_memory (ops
))
1626 while (ops
!= NULL
);
1628 /* Make sure the cache gets updated no matter what - if we are writing
1629 to the stack. Even if this write is not tagged as such, we still need
1630 to update the cache. */
1635 && !region
->attrib
.cache
1636 && stack_cache_enabled_p
1637 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1639 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1642 /* If we still haven't got anything, return the last error. We
1647 /* Perform a partial memory transfer. For docs see target.h,
1651 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1652 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1657 /* Zero length requests are ok and require no work. */
1661 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1662 breakpoint insns, thus hiding out from higher layers whether
1663 there are software breakpoints inserted in the code stream. */
1664 if (readbuf
!= NULL
)
1666 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1668 if (res
> 0 && !show_memory_breakpoints
)
1669 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1674 struct cleanup
*old_chain
;
1676 buf
= xmalloc (len
);
1677 old_chain
= make_cleanup (xfree
, buf
);
1678 memcpy (buf
, writebuf
, len
);
1680 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1681 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1683 do_cleanups (old_chain
);
1690 restore_show_memory_breakpoints (void *arg
)
1692 show_memory_breakpoints
= (uintptr_t) arg
;
1696 make_show_memory_breakpoints_cleanup (int show
)
1698 int current
= show_memory_breakpoints
;
1700 show_memory_breakpoints
= show
;
1701 return make_cleanup (restore_show_memory_breakpoints
,
1702 (void *) (uintptr_t) current
);
1705 /* For docs see target.h, to_xfer_partial. */
1708 target_xfer_partial (struct target_ops
*ops
,
1709 enum target_object object
, const char *annex
,
1710 void *readbuf
, const void *writebuf
,
1711 ULONGEST offset
, LONGEST len
)
1715 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1717 if (writebuf
&& !may_write_memory
)
1718 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1719 core_addr_to_string_nz (offset
), plongest (len
));
1721 /* If this is a memory transfer, let the memory-specific code
1722 have a look at it instead. Memory transfers are more
1724 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1725 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1726 writebuf
, offset
, len
);
1729 enum target_object raw_object
= object
;
1731 /* If this is a raw memory transfer, request the normal
1732 memory object from other layers. */
1733 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1734 raw_object
= TARGET_OBJECT_MEMORY
;
1736 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1737 writebuf
, offset
, len
);
1742 const unsigned char *myaddr
= NULL
;
1744 fprintf_unfiltered (gdb_stdlog
,
1745 "%s:target_xfer_partial "
1746 "(%d, %s, %s, %s, %s, %s) = %s",
1749 (annex
? annex
: "(null)"),
1750 host_address_to_string (readbuf
),
1751 host_address_to_string (writebuf
),
1752 core_addr_to_string_nz (offset
),
1753 plongest (len
), plongest (retval
));
1759 if (retval
> 0 && myaddr
!= NULL
)
1763 fputs_unfiltered (", bytes =", gdb_stdlog
);
1764 for (i
= 0; i
< retval
; i
++)
1766 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1768 if (targetdebug
< 2 && i
> 0)
1770 fprintf_unfiltered (gdb_stdlog
, " ...");
1773 fprintf_unfiltered (gdb_stdlog
, "\n");
1776 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1780 fputc_unfiltered ('\n', gdb_stdlog
);
1785 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1786 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1787 if any error occurs.
1789 If an error occurs, no guarantee is made about the contents of the data at
1790 MYADDR. In particular, the caller should not depend upon partial reads
1791 filling the buffer with good data. There is no way for the caller to know
1792 how much good data might have been transfered anyway. Callers that can
1793 deal with partial reads should call target_read (which will retry until
1794 it makes no progress, and then return how much was transferred). */
1797 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1799 /* Dispatch to the topmost target, not the flattened current_target.
1800 Memory accesses check target->to_has_(all_)memory, and the
1801 flattened target doesn't inherit those. */
1802 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1803 myaddr
, memaddr
, len
) == len
)
1809 /* Like target_read_memory, but specify explicitly that this is a read from
1810 the target's stack. This may trigger different cache behavior. */
1813 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ssize_t len
)
1815 /* Dispatch to the topmost target, not the flattened current_target.
1816 Memory accesses check target->to_has_(all_)memory, and the
1817 flattened target doesn't inherit those. */
1819 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1820 myaddr
, memaddr
, len
) == len
)
1826 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1827 Returns either 0 for success or an errno value if any error occurs.
1828 If an error occurs, no guarantee is made about how much data got written.
1829 Callers that can deal with partial writes should call target_write. */
1832 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1834 /* Dispatch to the topmost target, not the flattened current_target.
1835 Memory accesses check target->to_has_(all_)memory, and the
1836 flattened target doesn't inherit those. */
1837 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1838 myaddr
, memaddr
, len
) == len
)
1844 /* Write LEN bytes from MYADDR to target raw memory at address
1845 MEMADDR. Returns either 0 for success or an errno value if any
1846 error occurs. If an error occurs, no guarantee is made about how
1847 much data got written. Callers that can deal with partial writes
1848 should call target_write. */
1851 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
1853 /* Dispatch to the topmost target, not the flattened current_target.
1854 Memory accesses check target->to_has_(all_)memory, and the
1855 flattened target doesn't inherit those. */
1856 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1857 myaddr
, memaddr
, len
) == len
)
1863 /* Fetch the target's memory map. */
1866 target_memory_map (void)
1868 VEC(mem_region_s
) *result
;
1869 struct mem_region
*last_one
, *this_one
;
1871 struct target_ops
*t
;
1874 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1876 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1877 if (t
->to_memory_map
!= NULL
)
1883 result
= t
->to_memory_map (t
);
1887 qsort (VEC_address (mem_region_s
, result
),
1888 VEC_length (mem_region_s
, result
),
1889 sizeof (struct mem_region
), mem_region_cmp
);
1891 /* Check that regions do not overlap. Simultaneously assign
1892 a numbering for the "mem" commands to use to refer to
1895 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1897 this_one
->number
= ix
;
1899 if (last_one
&& last_one
->hi
> this_one
->lo
)
1901 warning (_("Overlapping regions in memory map: ignoring"));
1902 VEC_free (mem_region_s
, result
);
1905 last_one
= this_one
;
1912 target_flash_erase (ULONGEST address
, LONGEST length
)
1914 struct target_ops
*t
;
1916 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1917 if (t
->to_flash_erase
!= NULL
)
1920 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1921 hex_string (address
), phex (length
, 0));
1922 t
->to_flash_erase (t
, address
, length
);
1930 target_flash_done (void)
1932 struct target_ops
*t
;
1934 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1935 if (t
->to_flash_done
!= NULL
)
1938 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1939 t
->to_flash_done (t
);
1947 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1948 struct cmd_list_element
*c
, const char *value
)
1950 fprintf_filtered (file
,
1951 _("Mode for reading from readonly sections is %s.\n"),
1955 /* More generic transfers. */
1958 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1959 const char *annex
, gdb_byte
*readbuf
,
1960 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1962 if (object
== TARGET_OBJECT_MEMORY
1963 && ops
->deprecated_xfer_memory
!= NULL
)
1964 /* If available, fall back to the target's
1965 "deprecated_xfer_memory" method. */
1970 if (writebuf
!= NULL
)
1972 void *buffer
= xmalloc (len
);
1973 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1975 memcpy (buffer
, writebuf
, len
);
1976 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1977 1/*write*/, NULL
, ops
);
1978 do_cleanups (cleanup
);
1980 if (readbuf
!= NULL
)
1981 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1982 0/*read*/, NULL
, ops
);
1985 else if (xfered
== 0 && errno
== 0)
1986 /* "deprecated_xfer_memory" uses 0, cross checked against
1987 ERRNO as one indication of an error. */
1992 else if (ops
->beneath
!= NULL
)
1993 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1994 readbuf
, writebuf
, offset
, len
);
1999 /* The xfer_partial handler for the topmost target. Unlike the default,
2000 it does not need to handle memory specially; it just passes all
2001 requests down the stack. */
2004 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
2005 const char *annex
, gdb_byte
*readbuf
,
2006 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
2008 if (ops
->beneath
!= NULL
)
2009 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
2010 readbuf
, writebuf
, offset
, len
);
2015 /* Target vector read/write partial wrapper functions. */
2018 target_read_partial (struct target_ops
*ops
,
2019 enum target_object object
,
2020 const char *annex
, gdb_byte
*buf
,
2021 ULONGEST offset
, LONGEST len
)
2023 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
2027 target_write_partial (struct target_ops
*ops
,
2028 enum target_object object
,
2029 const char *annex
, const gdb_byte
*buf
,
2030 ULONGEST offset
, LONGEST len
)
2032 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
2035 /* Wrappers to perform the full transfer. */
2037 /* For docs on target_read see target.h. */
2040 target_read (struct target_ops
*ops
,
2041 enum target_object object
,
2042 const char *annex
, gdb_byte
*buf
,
2043 ULONGEST offset
, LONGEST len
)
2047 while (xfered
< len
)
2049 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
2050 (gdb_byte
*) buf
+ xfered
,
2051 offset
+ xfered
, len
- xfered
);
2053 /* Call an observer, notifying them of the xfer progress? */
2064 /* Assuming that the entire [begin, end) range of memory cannot be
2065 read, try to read whatever subrange is possible to read.
2067 The function returns, in RESULT, either zero or one memory block.
2068 If there's a readable subrange at the beginning, it is completely
2069 read and returned. Any further readable subrange will not be read.
2070 Otherwise, if there's a readable subrange at the end, it will be
2071 completely read and returned. Any readable subranges before it
2072 (obviously, not starting at the beginning), will be ignored. In
2073 other cases -- either no readable subrange, or readable subrange(s)
2074 that is neither at the beginning, or end, nothing is returned.
2076 The purpose of this function is to handle a read across a boundary
2077 of accessible memory in a case when memory map is not available.
2078 The above restrictions are fine for this case, but will give
2079 incorrect results if the memory is 'patchy'. However, supporting
2080 'patchy' memory would require trying to read every single byte,
2081 and it seems unacceptable solution. Explicit memory map is
2082 recommended for this case -- and target_read_memory_robust will
2083 take care of reading multiple ranges then. */
2086 read_whatever_is_readable (struct target_ops
*ops
,
2087 ULONGEST begin
, ULONGEST end
,
2088 VEC(memory_read_result_s
) **result
)
2090 gdb_byte
*buf
= xmalloc (end
- begin
);
2091 ULONGEST current_begin
= begin
;
2092 ULONGEST current_end
= end
;
2094 memory_read_result_s r
;
2096 /* If we previously failed to read 1 byte, nothing can be done here. */
2097 if (end
- begin
<= 1)
2103 /* Check that either first or the last byte is readable, and give up
2104 if not. This heuristic is meant to permit reading accessible memory
2105 at the boundary of accessible region. */
2106 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2107 buf
, begin
, 1) == 1)
2112 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2113 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2124 /* Loop invariant is that the [current_begin, current_end) was previously
2125 found to be not readable as a whole.
2127 Note loop condition -- if the range has 1 byte, we can't divide the range
2128 so there's no point trying further. */
2129 while (current_end
- current_begin
> 1)
2131 ULONGEST first_half_begin
, first_half_end
;
2132 ULONGEST second_half_begin
, second_half_end
;
2134 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2138 first_half_begin
= current_begin
;
2139 first_half_end
= middle
;
2140 second_half_begin
= middle
;
2141 second_half_end
= current_end
;
2145 first_half_begin
= middle
;
2146 first_half_end
= current_end
;
2147 second_half_begin
= current_begin
;
2148 second_half_end
= middle
;
2151 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2152 buf
+ (first_half_begin
- begin
),
2154 first_half_end
- first_half_begin
);
2156 if (xfer
== first_half_end
- first_half_begin
)
2158 /* This half reads up fine. So, the error must be in the
2160 current_begin
= second_half_begin
;
2161 current_end
= second_half_end
;
2165 /* This half is not readable. Because we've tried one byte, we
2166 know some part of this half if actually redable. Go to the next
2167 iteration to divide again and try to read.
2169 We don't handle the other half, because this function only tries
2170 to read a single readable subrange. */
2171 current_begin
= first_half_begin
;
2172 current_end
= first_half_end
;
2178 /* The [begin, current_begin) range has been read. */
2180 r
.end
= current_begin
;
2185 /* The [current_end, end) range has been read. */
2186 LONGEST rlen
= end
- current_end
;
2188 r
.data
= xmalloc (rlen
);
2189 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2190 r
.begin
= current_end
;
2194 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2198 free_memory_read_result_vector (void *x
)
2200 VEC(memory_read_result_s
) *v
= x
;
2201 memory_read_result_s
*current
;
2204 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2206 xfree (current
->data
);
2208 VEC_free (memory_read_result_s
, v
);
2211 VEC(memory_read_result_s
) *
2212 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2214 VEC(memory_read_result_s
) *result
= 0;
2217 while (xfered
< len
)
2219 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2222 /* If there is no explicit region, a fake one should be created. */
2223 gdb_assert (region
);
2225 if (region
->hi
== 0)
2226 rlen
= len
- xfered
;
2228 rlen
= region
->hi
- offset
;
2230 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2232 /* Cannot read this region. Note that we can end up here only
2233 if the region is explicitly marked inaccessible, or
2234 'inaccessible-by-default' is in effect. */
2239 LONGEST to_read
= min (len
- xfered
, rlen
);
2240 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2242 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2243 (gdb_byte
*) buffer
,
2244 offset
+ xfered
, to_read
);
2245 /* Call an observer, notifying them of the xfer progress? */
2248 /* Got an error reading full chunk. See if maybe we can read
2251 read_whatever_is_readable (ops
, offset
+ xfered
,
2252 offset
+ xfered
+ to_read
, &result
);
2257 struct memory_read_result r
;
2259 r
.begin
= offset
+ xfered
;
2260 r
.end
= r
.begin
+ xfer
;
2261 VEC_safe_push (memory_read_result_s
, result
, &r
);
2271 /* An alternative to target_write with progress callbacks. */
2274 target_write_with_progress (struct target_ops
*ops
,
2275 enum target_object object
,
2276 const char *annex
, const gdb_byte
*buf
,
2277 ULONGEST offset
, LONGEST len
,
2278 void (*progress
) (ULONGEST
, void *), void *baton
)
2282 /* Give the progress callback a chance to set up. */
2284 (*progress
) (0, baton
);
2286 while (xfered
< len
)
2288 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2289 (gdb_byte
*) buf
+ xfered
,
2290 offset
+ xfered
, len
- xfered
);
2298 (*progress
) (xfer
, baton
);
2306 /* For docs on target_write see target.h. */
2309 target_write (struct target_ops
*ops
,
2310 enum target_object object
,
2311 const char *annex
, const gdb_byte
*buf
,
2312 ULONGEST offset
, LONGEST len
)
2314 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2318 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2319 the size of the transferred data. PADDING additional bytes are
2320 available in *BUF_P. This is a helper function for
2321 target_read_alloc; see the declaration of that function for more
2325 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2326 const char *annex
, gdb_byte
**buf_p
, int padding
)
2328 size_t buf_alloc
, buf_pos
;
2332 /* This function does not have a length parameter; it reads the
2333 entire OBJECT). Also, it doesn't support objects fetched partly
2334 from one target and partly from another (in a different stratum,
2335 e.g. a core file and an executable). Both reasons make it
2336 unsuitable for reading memory. */
2337 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2339 /* Start by reading up to 4K at a time. The target will throttle
2340 this number down if necessary. */
2342 buf
= xmalloc (buf_alloc
);
2346 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2347 buf_pos
, buf_alloc
- buf_pos
- padding
);
2350 /* An error occurred. */
2356 /* Read all there was. */
2366 /* If the buffer is filling up, expand it. */
2367 if (buf_alloc
< buf_pos
* 2)
2370 buf
= xrealloc (buf
, buf_alloc
);
2377 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2378 the size of the transferred data. See the declaration in "target.h"
2379 function for more information about the return value. */
2382 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2383 const char *annex
, gdb_byte
**buf_p
)
2385 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2388 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2389 returned as a string, allocated using xmalloc. If an error occurs
2390 or the transfer is unsupported, NULL is returned. Empty objects
2391 are returned as allocated but empty strings. A warning is issued
2392 if the result contains any embedded NUL bytes. */
2395 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2400 LONGEST i
, transferred
;
2402 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2403 bufstr
= (char *) buffer
;
2405 if (transferred
< 0)
2408 if (transferred
== 0)
2409 return xstrdup ("");
2411 bufstr
[transferred
] = 0;
2413 /* Check for embedded NUL bytes; but allow trailing NULs. */
2414 for (i
= strlen (bufstr
); i
< transferred
; i
++)
2417 warning (_("target object %d, annex %s, "
2418 "contained unexpected null characters"),
2419 (int) object
, annex
? annex
: "(none)");
2426 /* Memory transfer methods. */
2429 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2432 /* This method is used to read from an alternate, non-current
2433 target. This read must bypass the overlay support (as symbols
2434 don't match this target), and GDB's internal cache (wrong cache
2435 for this target). */
2436 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2438 memory_error (EIO
, addr
);
2442 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2443 int len
, enum bfd_endian byte_order
)
2445 gdb_byte buf
[sizeof (ULONGEST
)];
2447 gdb_assert (len
<= sizeof (buf
));
2448 get_target_memory (ops
, addr
, buf
, len
);
2449 return extract_unsigned_integer (buf
, len
, byte_order
);
2453 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2454 struct bp_target_info
*bp_tgt
)
2456 if (!may_insert_breakpoints
)
2458 warning (_("May not insert breakpoints"));
2462 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2466 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2467 struct bp_target_info
*bp_tgt
)
2469 /* This is kind of a weird case to handle, but the permission might
2470 have been changed after breakpoints were inserted - in which case
2471 we should just take the user literally and assume that any
2472 breakpoints should be left in place. */
2473 if (!may_insert_breakpoints
)
2475 warning (_("May not remove breakpoints"));
2479 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2483 target_info (char *args
, int from_tty
)
2485 struct target_ops
*t
;
2486 int has_all_mem
= 0;
2488 if (symfile_objfile
!= NULL
)
2489 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2491 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2493 if (!(*t
->to_has_memory
) (t
))
2496 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2499 printf_unfiltered (_("\tWhile running this, "
2500 "GDB does not access memory from...\n"));
2501 printf_unfiltered ("%s:\n", t
->to_longname
);
2502 (t
->to_files_info
) (t
);
2503 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2507 /* This function is called before any new inferior is created, e.g.
2508 by running a program, attaching, or connecting to a target.
2509 It cleans up any state from previous invocations which might
2510 change between runs. This is a subset of what target_preopen
2511 resets (things which might change between targets). */
2514 target_pre_inferior (int from_tty
)
2516 /* Clear out solib state. Otherwise the solib state of the previous
2517 inferior might have survived and is entirely wrong for the new
2518 target. This has been observed on GNU/Linux using glibc 2.3. How
2530 Cannot access memory at address 0xdeadbeef
2533 /* In some OSs, the shared library list is the same/global/shared
2534 across inferiors. If code is shared between processes, so are
2535 memory regions and features. */
2536 if (!gdbarch_has_global_solist (target_gdbarch ()))
2538 no_shared_libraries (NULL
, from_tty
);
2540 invalidate_target_mem_regions ();
2542 target_clear_description ();
2545 agent_capability_invalidate ();
2548 /* Callback for iterate_over_inferiors. Gets rid of the given
2552 dispose_inferior (struct inferior
*inf
, void *args
)
2554 struct thread_info
*thread
;
2556 thread
= any_thread_of_process (inf
->pid
);
2559 switch_to_thread (thread
->ptid
);
2561 /* Core inferiors actually should be detached, not killed. */
2562 if (target_has_execution
)
2565 target_detach (NULL
, 0);
2571 /* This is to be called by the open routine before it does
2575 target_preopen (int from_tty
)
2579 if (have_inferiors ())
2582 || !have_live_inferiors ()
2583 || query (_("A program is being debugged already. Kill it? ")))
2584 iterate_over_inferiors (dispose_inferior
, NULL
);
2586 error (_("Program not killed."));
2589 /* Calling target_kill may remove the target from the stack. But if
2590 it doesn't (which seems like a win for UDI), remove it now. */
2591 /* Leave the exec target, though. The user may be switching from a
2592 live process to a core of the same program. */
2593 pop_all_targets_above (file_stratum
);
2595 target_pre_inferior (from_tty
);
2598 /* Detach a target after doing deferred register stores. */
2601 target_detach (char *args
, int from_tty
)
2603 struct target_ops
* t
;
2605 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
2606 /* Don't remove global breakpoints here. They're removed on
2607 disconnection from the target. */
2610 /* If we're in breakpoints-always-inserted mode, have to remove
2611 them before detaching. */
2612 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2614 prepare_for_detach ();
2616 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2618 if (t
->to_detach
!= NULL
)
2620 t
->to_detach (t
, args
, from_tty
);
2622 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2628 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2632 target_disconnect (char *args
, int from_tty
)
2634 struct target_ops
*t
;
2636 /* If we're in breakpoints-always-inserted mode or if breakpoints
2637 are global across processes, we have to remove them before
2639 remove_breakpoints ();
2641 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2642 if (t
->to_disconnect
!= NULL
)
2645 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2647 t
->to_disconnect (t
, args
, from_tty
);
2655 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2657 struct target_ops
*t
;
2659 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2661 if (t
->to_wait
!= NULL
)
2663 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2667 char *status_string
;
2668 char *options_string
;
2670 status_string
= target_waitstatus_to_string (status
);
2671 options_string
= target_options_to_string (options
);
2672 fprintf_unfiltered (gdb_stdlog
,
2673 "target_wait (%d, status, options={%s})"
2675 PIDGET (ptid
), options_string
,
2676 PIDGET (retval
), status_string
);
2677 xfree (status_string
);
2678 xfree (options_string
);
2689 target_pid_to_str (ptid_t ptid
)
2691 struct target_ops
*t
;
2693 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2695 if (t
->to_pid_to_str
!= NULL
)
2696 return (*t
->to_pid_to_str
) (t
, ptid
);
2699 return normal_pid_to_str (ptid
);
2703 target_thread_name (struct thread_info
*info
)
2705 struct target_ops
*t
;
2707 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2709 if (t
->to_thread_name
!= NULL
)
2710 return (*t
->to_thread_name
) (info
);
2717 target_resume (ptid_t ptid
, int step
, enum gdb_signal signal
)
2719 struct target_ops
*t
;
2721 target_dcache_invalidate ();
2723 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2725 if (t
->to_resume
!= NULL
)
2727 t
->to_resume (t
, ptid
, step
, signal
);
2729 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2731 step
? "step" : "continue",
2732 gdb_signal_to_name (signal
));
2734 registers_changed_ptid (ptid
);
2735 set_executing (ptid
, 1);
2736 set_running (ptid
, 1);
2737 clear_inline_frame_state (ptid
);
2746 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2748 struct target_ops
*t
;
2750 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2752 if (t
->to_pass_signals
!= NULL
)
2758 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2761 for (i
= 0; i
< numsigs
; i
++)
2762 if (pass_signals
[i
])
2763 fprintf_unfiltered (gdb_stdlog
, " %s",
2764 gdb_signal_to_name (i
));
2766 fprintf_unfiltered (gdb_stdlog
, " })\n");
2769 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2776 target_program_signals (int numsigs
, unsigned char *program_signals
)
2778 struct target_ops
*t
;
2780 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2782 if (t
->to_program_signals
!= NULL
)
2788 fprintf_unfiltered (gdb_stdlog
, "target_program_signals (%d, {",
2791 for (i
= 0; i
< numsigs
; i
++)
2792 if (program_signals
[i
])
2793 fprintf_unfiltered (gdb_stdlog
, " %s",
2794 gdb_signal_to_name (i
));
2796 fprintf_unfiltered (gdb_stdlog
, " })\n");
2799 (*t
->to_program_signals
) (numsigs
, program_signals
);
2805 /* Look through the list of possible targets for a target that can
2809 target_follow_fork (int follow_child
)
2811 struct target_ops
*t
;
2813 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2815 if (t
->to_follow_fork
!= NULL
)
2817 int retval
= t
->to_follow_fork (t
, follow_child
);
2820 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2821 follow_child
, retval
);
2826 /* Some target returned a fork event, but did not know how to follow it. */
2827 internal_error (__FILE__
, __LINE__
,
2828 _("could not find a target to follow fork"));
2832 target_mourn_inferior (void)
2834 struct target_ops
*t
;
2836 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2838 if (t
->to_mourn_inferior
!= NULL
)
2840 t
->to_mourn_inferior (t
);
2842 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2844 /* We no longer need to keep handles on any of the object files.
2845 Make sure to release them to avoid unnecessarily locking any
2846 of them while we're not actually debugging. */
2847 bfd_cache_close_all ();
2853 internal_error (__FILE__
, __LINE__
,
2854 _("could not find a target to follow mourn inferior"));
2857 /* Look for a target which can describe architectural features, starting
2858 from TARGET. If we find one, return its description. */
2860 const struct target_desc
*
2861 target_read_description (struct target_ops
*target
)
2863 struct target_ops
*t
;
2865 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2866 if (t
->to_read_description
!= NULL
)
2868 const struct target_desc
*tdesc
;
2870 tdesc
= t
->to_read_description (t
);
2878 /* The default implementation of to_search_memory.
2879 This implements a basic search of memory, reading target memory and
2880 performing the search here (as opposed to performing the search in on the
2881 target side with, for example, gdbserver). */
2884 simple_search_memory (struct target_ops
*ops
,
2885 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2886 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2887 CORE_ADDR
*found_addrp
)
2889 /* NOTE: also defined in find.c testcase. */
2890 #define SEARCH_CHUNK_SIZE 16000
2891 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2892 /* Buffer to hold memory contents for searching. */
2893 gdb_byte
*search_buf
;
2894 unsigned search_buf_size
;
2895 struct cleanup
*old_cleanups
;
2897 search_buf_size
= chunk_size
+ pattern_len
- 1;
2899 /* No point in trying to allocate a buffer larger than the search space. */
2900 if (search_space_len
< search_buf_size
)
2901 search_buf_size
= search_space_len
;
2903 search_buf
= malloc (search_buf_size
);
2904 if (search_buf
== NULL
)
2905 error (_("Unable to allocate memory to perform the search."));
2906 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2908 /* Prime the search buffer. */
2910 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2911 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2913 warning (_("Unable to access %s bytes of target "
2914 "memory at %s, halting search."),
2915 pulongest (search_buf_size
), hex_string (start_addr
));
2916 do_cleanups (old_cleanups
);
2920 /* Perform the search.
2922 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2923 When we've scanned N bytes we copy the trailing bytes to the start and
2924 read in another N bytes. */
2926 while (search_space_len
>= pattern_len
)
2928 gdb_byte
*found_ptr
;
2929 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2931 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2932 pattern
, pattern_len
);
2934 if (found_ptr
!= NULL
)
2936 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2938 *found_addrp
= found_addr
;
2939 do_cleanups (old_cleanups
);
2943 /* Not found in this chunk, skip to next chunk. */
2945 /* Don't let search_space_len wrap here, it's unsigned. */
2946 if (search_space_len
>= chunk_size
)
2947 search_space_len
-= chunk_size
;
2949 search_space_len
= 0;
2951 if (search_space_len
>= pattern_len
)
2953 unsigned keep_len
= search_buf_size
- chunk_size
;
2954 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2957 /* Copy the trailing part of the previous iteration to the front
2958 of the buffer for the next iteration. */
2959 gdb_assert (keep_len
== pattern_len
- 1);
2960 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2962 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2964 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2965 search_buf
+ keep_len
, read_addr
,
2966 nr_to_read
) != nr_to_read
)
2968 warning (_("Unable to access %s bytes of target "
2969 "memory at %s, halting search."),
2970 plongest (nr_to_read
),
2971 hex_string (read_addr
));
2972 do_cleanups (old_cleanups
);
2976 start_addr
+= chunk_size
;
2982 do_cleanups (old_cleanups
);
2986 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2987 sequence of bytes in PATTERN with length PATTERN_LEN.
2989 The result is 1 if found, 0 if not found, and -1 if there was an error
2990 requiring halting of the search (e.g. memory read error).
2991 If the pattern is found the address is recorded in FOUND_ADDRP. */
2994 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2995 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2996 CORE_ADDR
*found_addrp
)
2998 struct target_ops
*t
;
3001 /* We don't use INHERIT to set current_target.to_search_memory,
3002 so we have to scan the target stack and handle targetdebug
3006 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
3007 hex_string (start_addr
));
3009 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3010 if (t
->to_search_memory
!= NULL
)
3015 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
3016 pattern
, pattern_len
, found_addrp
);
3020 /* If a special version of to_search_memory isn't available, use the
3022 found
= simple_search_memory (current_target
.beneath
,
3023 start_addr
, search_space_len
,
3024 pattern
, pattern_len
, found_addrp
);
3028 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
3033 /* Look through the currently pushed targets. If none of them will
3034 be able to restart the currently running process, issue an error
3038 target_require_runnable (void)
3040 struct target_ops
*t
;
3042 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
3044 /* If this target knows how to create a new program, then
3045 assume we will still be able to after killing the current
3046 one. Either killing and mourning will not pop T, or else
3047 find_default_run_target will find it again. */
3048 if (t
->to_create_inferior
!= NULL
)
3051 /* Do not worry about thread_stratum targets that can not
3052 create inferiors. Assume they will be pushed again if
3053 necessary, and continue to the process_stratum. */
3054 if (t
->to_stratum
== thread_stratum
3055 || t
->to_stratum
== arch_stratum
)
3058 error (_("The \"%s\" target does not support \"run\". "
3059 "Try \"help target\" or \"continue\"."),
3063 /* This function is only called if the target is running. In that
3064 case there should have been a process_stratum target and it
3065 should either know how to create inferiors, or not... */
3066 internal_error (__FILE__
, __LINE__
, _("No targets found"));
3069 /* Look through the list of possible targets for a target that can
3070 execute a run or attach command without any other data. This is
3071 used to locate the default process stratum.
3073 If DO_MESG is not NULL, the result is always valid (error() is
3074 called for errors); else, return NULL on error. */
3076 static struct target_ops
*
3077 find_default_run_target (char *do_mesg
)
3079 struct target_ops
**t
;
3080 struct target_ops
*runable
= NULL
;
3085 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
3088 if ((*t
)->to_can_run
&& target_can_run (*t
))
3098 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3107 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3109 struct target_ops
*t
;
3111 t
= find_default_run_target ("attach");
3112 (t
->to_attach
) (t
, args
, from_tty
);
3117 find_default_create_inferior (struct target_ops
*ops
,
3118 char *exec_file
, char *allargs
, char **env
,
3121 struct target_ops
*t
;
3123 t
= find_default_run_target ("run");
3124 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3129 find_default_can_async_p (void)
3131 struct target_ops
*t
;
3133 /* This may be called before the target is pushed on the stack;
3134 look for the default process stratum. If there's none, gdb isn't
3135 configured with a native debugger, and target remote isn't
3137 t
= find_default_run_target (NULL
);
3138 if (t
&& t
->to_can_async_p
)
3139 return (t
->to_can_async_p
) ();
3144 find_default_is_async_p (void)
3146 struct target_ops
*t
;
3148 /* This may be called before the target is pushed on the stack;
3149 look for the default process stratum. If there's none, gdb isn't
3150 configured with a native debugger, and target remote isn't
3152 t
= find_default_run_target (NULL
);
3153 if (t
&& t
->to_is_async_p
)
3154 return (t
->to_is_async_p
) ();
3159 find_default_supports_non_stop (void)
3161 struct target_ops
*t
;
3163 t
= find_default_run_target (NULL
);
3164 if (t
&& t
->to_supports_non_stop
)
3165 return (t
->to_supports_non_stop
) ();
3170 target_supports_non_stop (void)
3172 struct target_ops
*t
;
3174 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3175 if (t
->to_supports_non_stop
)
3176 return t
->to_supports_non_stop ();
3181 /* Implement the "info proc" command. */
3184 target_info_proc (char *args
, enum info_proc_what what
)
3186 struct target_ops
*t
;
3188 /* If we're already connected to something that can get us OS
3189 related data, use it. Otherwise, try using the native
3191 if (current_target
.to_stratum
>= process_stratum
)
3192 t
= current_target
.beneath
;
3194 t
= find_default_run_target (NULL
);
3196 for (; t
!= NULL
; t
= t
->beneath
)
3198 if (t
->to_info_proc
!= NULL
)
3200 t
->to_info_proc (t
, args
, what
);
3203 fprintf_unfiltered (gdb_stdlog
,
3204 "target_info_proc (\"%s\", %d)\n", args
, what
);
3214 find_default_supports_disable_randomization (void)
3216 struct target_ops
*t
;
3218 t
= find_default_run_target (NULL
);
3219 if (t
&& t
->to_supports_disable_randomization
)
3220 return (t
->to_supports_disable_randomization
) ();
3225 target_supports_disable_randomization (void)
3227 struct target_ops
*t
;
3229 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3230 if (t
->to_supports_disable_randomization
)
3231 return t
->to_supports_disable_randomization ();
3237 target_get_osdata (const char *type
)
3239 struct target_ops
*t
;
3241 /* If we're already connected to something that can get us OS
3242 related data, use it. Otherwise, try using the native
3244 if (current_target
.to_stratum
>= process_stratum
)
3245 t
= current_target
.beneath
;
3247 t
= find_default_run_target ("get OS data");
3252 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3255 /* Determine the current address space of thread PTID. */
3257 struct address_space
*
3258 target_thread_address_space (ptid_t ptid
)
3260 struct address_space
*aspace
;
3261 struct inferior
*inf
;
3262 struct target_ops
*t
;
3264 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3266 if (t
->to_thread_address_space
!= NULL
)
3268 aspace
= t
->to_thread_address_space (t
, ptid
);
3269 gdb_assert (aspace
);
3272 fprintf_unfiltered (gdb_stdlog
,
3273 "target_thread_address_space (%s) = %d\n",
3274 target_pid_to_str (ptid
),
3275 address_space_num (aspace
));
3280 /* Fall-back to the "main" address space of the inferior. */
3281 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3283 if (inf
== NULL
|| inf
->aspace
== NULL
)
3284 internal_error (__FILE__
, __LINE__
,
3285 _("Can't determine the current "
3286 "address space of thread %s\n"),
3287 target_pid_to_str (ptid
));
3293 /* Target file operations. */
3295 static struct target_ops
*
3296 default_fileio_target (void)
3298 /* If we're already connected to something that can perform
3299 file I/O, use it. Otherwise, try using the native target. */
3300 if (current_target
.to_stratum
>= process_stratum
)
3301 return current_target
.beneath
;
3303 return find_default_run_target ("file I/O");
3306 /* Open FILENAME on the target, using FLAGS and MODE. Return a
3307 target file descriptor, or -1 if an error occurs (and set
3310 target_fileio_open (const char *filename
, int flags
, int mode
,
3313 struct target_ops
*t
;
3315 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3317 if (t
->to_fileio_open
!= NULL
)
3319 int fd
= t
->to_fileio_open (filename
, flags
, mode
, target_errno
);
3322 fprintf_unfiltered (gdb_stdlog
,
3323 "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n",
3324 filename
, flags
, mode
,
3325 fd
, fd
!= -1 ? 0 : *target_errno
);
3330 *target_errno
= FILEIO_ENOSYS
;
3334 /* Write up to LEN bytes from WRITE_BUF to FD on the target.
3335 Return the number of bytes written, or -1 if an error occurs
3336 (and set *TARGET_ERRNO). */
3338 target_fileio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
3339 ULONGEST offset
, int *target_errno
)
3341 struct target_ops
*t
;
3343 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3345 if (t
->to_fileio_pwrite
!= NULL
)
3347 int ret
= t
->to_fileio_pwrite (fd
, write_buf
, len
, offset
,
3351 fprintf_unfiltered (gdb_stdlog
,
3352 "target_fileio_pwrite (%d,...,%d,%s) "
3354 fd
, len
, pulongest (offset
),
3355 ret
, ret
!= -1 ? 0 : *target_errno
);
3360 *target_errno
= FILEIO_ENOSYS
;
3364 /* Read up to LEN bytes FD on the target into READ_BUF.
3365 Return the number of bytes read, or -1 if an error occurs
3366 (and set *TARGET_ERRNO). */
3368 target_fileio_pread (int fd
, gdb_byte
*read_buf
, int len
,
3369 ULONGEST offset
, int *target_errno
)
3371 struct target_ops
*t
;
3373 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3375 if (t
->to_fileio_pread
!= NULL
)
3377 int ret
= t
->to_fileio_pread (fd
, read_buf
, len
, offset
,
3381 fprintf_unfiltered (gdb_stdlog
,
3382 "target_fileio_pread (%d,...,%d,%s) "
3384 fd
, len
, pulongest (offset
),
3385 ret
, ret
!= -1 ? 0 : *target_errno
);
3390 *target_errno
= FILEIO_ENOSYS
;
3394 /* Close FD on the target. Return 0, or -1 if an error occurs
3395 (and set *TARGET_ERRNO). */
3397 target_fileio_close (int fd
, int *target_errno
)
3399 struct target_ops
*t
;
3401 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3403 if (t
->to_fileio_close
!= NULL
)
3405 int ret
= t
->to_fileio_close (fd
, target_errno
);
3408 fprintf_unfiltered (gdb_stdlog
,
3409 "target_fileio_close (%d) = %d (%d)\n",
3410 fd
, ret
, ret
!= -1 ? 0 : *target_errno
);
3415 *target_errno
= FILEIO_ENOSYS
;
3419 /* Unlink FILENAME on the target. Return 0, or -1 if an error
3420 occurs (and set *TARGET_ERRNO). */
3422 target_fileio_unlink (const char *filename
, int *target_errno
)
3424 struct target_ops
*t
;
3426 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3428 if (t
->to_fileio_unlink
!= NULL
)
3430 int ret
= t
->to_fileio_unlink (filename
, target_errno
);
3433 fprintf_unfiltered (gdb_stdlog
,
3434 "target_fileio_unlink (%s) = %d (%d)\n",
3435 filename
, ret
, ret
!= -1 ? 0 : *target_errno
);
3440 *target_errno
= FILEIO_ENOSYS
;
3444 /* Read value of symbolic link FILENAME on the target. Return a
3445 null-terminated string allocated via xmalloc, or NULL if an error
3446 occurs (and set *TARGET_ERRNO). */
3448 target_fileio_readlink (const char *filename
, int *target_errno
)
3450 struct target_ops
*t
;
3452 for (t
= default_fileio_target (); t
!= NULL
; t
= t
->beneath
)
3454 if (t
->to_fileio_readlink
!= NULL
)
3456 char *ret
= t
->to_fileio_readlink (filename
, target_errno
);
3459 fprintf_unfiltered (gdb_stdlog
,
3460 "target_fileio_readlink (%s) = %s (%d)\n",
3461 filename
, ret
? ret
: "(nil)",
3462 ret
? 0 : *target_errno
);
3467 *target_errno
= FILEIO_ENOSYS
;
3472 target_fileio_close_cleanup (void *opaque
)
3474 int fd
= *(int *) opaque
;
3477 target_fileio_close (fd
, &target_errno
);
3480 /* Read target file FILENAME. Store the result in *BUF_P and
3481 return the size of the transferred data. PADDING additional bytes are
3482 available in *BUF_P. This is a helper function for
3483 target_fileio_read_alloc; see the declaration of that function for more
3487 target_fileio_read_alloc_1 (const char *filename
,
3488 gdb_byte
**buf_p
, int padding
)
3490 struct cleanup
*close_cleanup
;
3491 size_t buf_alloc
, buf_pos
;
3497 fd
= target_fileio_open (filename
, FILEIO_O_RDONLY
, 0700, &target_errno
);
3501 close_cleanup
= make_cleanup (target_fileio_close_cleanup
, &fd
);
3503 /* Start by reading up to 4K at a time. The target will throttle
3504 this number down if necessary. */
3506 buf
= xmalloc (buf_alloc
);
3510 n
= target_fileio_pread (fd
, &buf
[buf_pos
],
3511 buf_alloc
- buf_pos
- padding
, buf_pos
,
3515 /* An error occurred. */
3516 do_cleanups (close_cleanup
);
3522 /* Read all there was. */
3523 do_cleanups (close_cleanup
);
3533 /* If the buffer is filling up, expand it. */
3534 if (buf_alloc
< buf_pos
* 2)
3537 buf
= xrealloc (buf
, buf_alloc
);
3544 /* Read target file FILENAME. Store the result in *BUF_P and return
3545 the size of the transferred data. See the declaration in "target.h"
3546 function for more information about the return value. */
3549 target_fileio_read_alloc (const char *filename
, gdb_byte
**buf_p
)
3551 return target_fileio_read_alloc_1 (filename
, buf_p
, 0);
3554 /* Read target file FILENAME. The result is NUL-terminated and
3555 returned as a string, allocated using xmalloc. If an error occurs
3556 or the transfer is unsupported, NULL is returned. Empty objects
3557 are returned as allocated but empty strings. A warning is issued
3558 if the result contains any embedded NUL bytes. */
3561 target_fileio_read_stralloc (const char *filename
)
3565 LONGEST i
, transferred
;
3567 transferred
= target_fileio_read_alloc_1 (filename
, &buffer
, 1);
3568 bufstr
= (char *) buffer
;
3570 if (transferred
< 0)
3573 if (transferred
== 0)
3574 return xstrdup ("");
3576 bufstr
[transferred
] = 0;
3578 /* Check for embedded NUL bytes; but allow trailing NULs. */
3579 for (i
= strlen (bufstr
); i
< transferred
; i
++)
3582 warning (_("target file %s "
3583 "contained unexpected null characters"),
3593 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3595 return (len
<= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT
);
3599 default_watchpoint_addr_within_range (struct target_ops
*target
,
3601 CORE_ADDR start
, int length
)
3603 return addr
>= start
&& addr
< start
+ length
;
3606 static struct gdbarch
*
3607 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3609 return target_gdbarch ();
3625 return_minus_one (void)
3631 * Find the next target down the stack from the specified target.
3635 find_target_beneath (struct target_ops
*t
)
3641 /* The inferior process has died. Long live the inferior! */
3644 generic_mourn_inferior (void)
3648 ptid
= inferior_ptid
;
3649 inferior_ptid
= null_ptid
;
3651 /* Mark breakpoints uninserted in case something tries to delete a
3652 breakpoint while we delete the inferior's threads (which would
3653 fail, since the inferior is long gone). */
3654 mark_breakpoints_out ();
3656 if (!ptid_equal (ptid
, null_ptid
))
3658 int pid
= ptid_get_pid (ptid
);
3659 exit_inferior (pid
);
3662 /* Note this wipes step-resume breakpoints, so needs to be done
3663 after exit_inferior, which ends up referencing the step-resume
3664 breakpoints through clear_thread_inferior_resources. */
3665 breakpoint_init_inferior (inf_exited
);
3667 registers_changed ();
3669 reopen_exec_file ();
3670 reinit_frame_cache ();
3672 if (deprecated_detach_hook
)
3673 deprecated_detach_hook ();
3676 /* Convert a normal process ID to a string. Returns the string in a
3680 normal_pid_to_str (ptid_t ptid
)
3682 static char buf
[32];
3684 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3689 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3691 return normal_pid_to_str (ptid
);
3694 /* Error-catcher for target_find_memory_regions. */
3696 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3698 error (_("Command not implemented for this target."));
3702 /* Error-catcher for target_make_corefile_notes. */
3704 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3706 error (_("Command not implemented for this target."));
3710 /* Error-catcher for target_get_bookmark. */
3712 dummy_get_bookmark (char *ignore1
, int ignore2
)
3718 /* Error-catcher for target_goto_bookmark. */
3720 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3725 /* Set up the handful of non-empty slots needed by the dummy target
3729 init_dummy_target (void)
3731 dummy_target
.to_shortname
= "None";
3732 dummy_target
.to_longname
= "None";
3733 dummy_target
.to_doc
= "";
3734 dummy_target
.to_attach
= find_default_attach
;
3735 dummy_target
.to_detach
=
3736 (void (*)(struct target_ops
*, char *, int))target_ignore
;
3737 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3738 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3739 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3740 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3741 dummy_target
.to_supports_disable_randomization
3742 = find_default_supports_disable_randomization
;
3743 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3744 dummy_target
.to_stratum
= dummy_stratum
;
3745 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3746 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3747 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3748 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3749 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3750 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3751 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3752 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3753 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3754 dummy_target
.to_has_execution
3755 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3756 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3757 dummy_target
.to_stopped_data_address
=
3758 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3759 dummy_target
.to_magic
= OPS_MAGIC
;
3763 debug_to_open (char *args
, int from_tty
)
3765 debug_target
.to_open (args
, from_tty
);
3767 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3771 target_close (struct target_ops
*targ
)
3773 if (targ
->to_xclose
!= NULL
)
3774 targ
->to_xclose (targ
);
3775 else if (targ
->to_close
!= NULL
)
3779 fprintf_unfiltered (gdb_stdlog
, "target_close ()\n");
3783 target_attach (char *args
, int from_tty
)
3785 struct target_ops
*t
;
3787 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3789 if (t
->to_attach
!= NULL
)
3791 t
->to_attach (t
, args
, from_tty
);
3793 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3799 internal_error (__FILE__
, __LINE__
,
3800 _("could not find a target to attach"));
3804 target_thread_alive (ptid_t ptid
)
3806 struct target_ops
*t
;
3808 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3810 if (t
->to_thread_alive
!= NULL
)
3814 retval
= t
->to_thread_alive (t
, ptid
);
3816 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3817 PIDGET (ptid
), retval
);
3827 target_find_new_threads (void)
3829 struct target_ops
*t
;
3831 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3833 if (t
->to_find_new_threads
!= NULL
)
3835 t
->to_find_new_threads (t
);
3837 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3845 target_stop (ptid_t ptid
)
3849 warning (_("May not interrupt or stop the target, ignoring attempt"));
3853 (*current_target
.to_stop
) (ptid
);
3857 debug_to_post_attach (int pid
)
3859 debug_target
.to_post_attach (pid
);
3861 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3864 /* Return a pretty printed form of target_waitstatus.
3865 Space for the result is malloc'd, caller must free. */
3868 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
3870 const char *kind_str
= "status->kind = ";
3874 case TARGET_WAITKIND_EXITED
:
3875 return xstrprintf ("%sexited, status = %d",
3876 kind_str
, ws
->value
.integer
);
3877 case TARGET_WAITKIND_STOPPED
:
3878 return xstrprintf ("%sstopped, signal = %s",
3879 kind_str
, gdb_signal_to_name (ws
->value
.sig
));
3880 case TARGET_WAITKIND_SIGNALLED
:
3881 return xstrprintf ("%ssignalled, signal = %s",
3882 kind_str
, gdb_signal_to_name (ws
->value
.sig
));
3883 case TARGET_WAITKIND_LOADED
:
3884 return xstrprintf ("%sloaded", kind_str
);
3885 case TARGET_WAITKIND_FORKED
:
3886 return xstrprintf ("%sforked", kind_str
);
3887 case TARGET_WAITKIND_VFORKED
:
3888 return xstrprintf ("%svforked", kind_str
);
3889 case TARGET_WAITKIND_EXECD
:
3890 return xstrprintf ("%sexecd", kind_str
);
3891 case TARGET_WAITKIND_VFORK_DONE
:
3892 return xstrprintf ("%svfork-done", kind_str
);
3893 case TARGET_WAITKIND_SYSCALL_ENTRY
:
3894 return xstrprintf ("%sentered syscall", kind_str
);
3895 case TARGET_WAITKIND_SYSCALL_RETURN
:
3896 return xstrprintf ("%sexited syscall", kind_str
);
3897 case TARGET_WAITKIND_SPURIOUS
:
3898 return xstrprintf ("%sspurious", kind_str
);
3899 case TARGET_WAITKIND_IGNORE
:
3900 return xstrprintf ("%signore", kind_str
);
3901 case TARGET_WAITKIND_NO_HISTORY
:
3902 return xstrprintf ("%sno-history", kind_str
);
3903 case TARGET_WAITKIND_NO_RESUMED
:
3904 return xstrprintf ("%sno-resumed", kind_str
);
3906 return xstrprintf ("%sunknown???", kind_str
);
3910 /* Concatenate ELEM to LIST, a comma separate list, and return the
3911 result. The LIST incoming argument is released. */
3914 str_comma_list_concat_elem (char *list
, const char *elem
)
3917 return xstrdup (elem
);
3919 return reconcat (list
, list
, ", ", elem
, (char *) NULL
);
3922 /* Helper for target_options_to_string. If OPT is present in
3923 TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET.
3924 Returns the new resulting string. OPT is removed from
3928 do_option (int *target_options
, char *ret
,
3929 int opt
, char *opt_str
)
3931 if ((*target_options
& opt
) != 0)
3933 ret
= str_comma_list_concat_elem (ret
, opt_str
);
3934 *target_options
&= ~opt
;
3941 target_options_to_string (int target_options
)
3945 #define DO_TARG_OPTION(OPT) \
3946 ret = do_option (&target_options, ret, OPT, #OPT)
3948 DO_TARG_OPTION (TARGET_WNOHANG
);
3950 if (target_options
!= 0)
3951 ret
= str_comma_list_concat_elem (ret
, "unknown???");
3959 debug_print_register (const char * func
,
3960 struct regcache
*regcache
, int regno
)
3962 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3964 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3965 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3966 && gdbarch_register_name (gdbarch
, regno
) != NULL
3967 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3968 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3969 gdbarch_register_name (gdbarch
, regno
));
3971 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3972 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3974 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3975 int i
, size
= register_size (gdbarch
, regno
);
3976 gdb_byte buf
[MAX_REGISTER_SIZE
];
3978 regcache_raw_collect (regcache
, regno
, buf
);
3979 fprintf_unfiltered (gdb_stdlog
, " = ");
3980 for (i
= 0; i
< size
; i
++)
3982 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3984 if (size
<= sizeof (LONGEST
))
3986 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3988 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3989 core_addr_to_string_nz (val
), plongest (val
));
3992 fprintf_unfiltered (gdb_stdlog
, "\n");
3996 target_fetch_registers (struct regcache
*regcache
, int regno
)
3998 struct target_ops
*t
;
4000 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4002 if (t
->to_fetch_registers
!= NULL
)
4004 t
->to_fetch_registers (t
, regcache
, regno
);
4006 debug_print_register ("target_fetch_registers", regcache
, regno
);
4013 target_store_registers (struct regcache
*regcache
, int regno
)
4015 struct target_ops
*t
;
4017 if (!may_write_registers
)
4018 error (_("Writing to registers is not allowed (regno %d)"), regno
);
4020 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4022 if (t
->to_store_registers
!= NULL
)
4024 t
->to_store_registers (t
, regcache
, regno
);
4027 debug_print_register ("target_store_registers", regcache
, regno
);
4037 target_core_of_thread (ptid_t ptid
)
4039 struct target_ops
*t
;
4041 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4043 if (t
->to_core_of_thread
!= NULL
)
4045 int retval
= t
->to_core_of_thread (t
, ptid
);
4048 fprintf_unfiltered (gdb_stdlog
,
4049 "target_core_of_thread (%d) = %d\n",
4050 PIDGET (ptid
), retval
);
4059 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
4061 struct target_ops
*t
;
4063 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4065 if (t
->to_verify_memory
!= NULL
)
4067 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
4070 fprintf_unfiltered (gdb_stdlog
,
4071 "target_verify_memory (%s, %s) = %d\n",
4072 paddress (target_gdbarch (), memaddr
),
4082 /* The documentation for this function is in its prototype declaration in
4086 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4088 struct target_ops
*t
;
4090 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4091 if (t
->to_insert_mask_watchpoint
!= NULL
)
4095 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
4098 fprintf_unfiltered (gdb_stdlog
, "\
4099 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
4100 core_addr_to_string (addr
),
4101 core_addr_to_string (mask
), rw
, ret
);
4109 /* The documentation for this function is in its prototype declaration in
4113 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
4115 struct target_ops
*t
;
4117 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4118 if (t
->to_remove_mask_watchpoint
!= NULL
)
4122 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
4125 fprintf_unfiltered (gdb_stdlog
, "\
4126 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
4127 core_addr_to_string (addr
),
4128 core_addr_to_string (mask
), rw
, ret
);
4136 /* The documentation for this function is in its prototype declaration
4140 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
4142 struct target_ops
*t
;
4144 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4145 if (t
->to_masked_watch_num_registers
!= NULL
)
4146 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
4151 /* The documentation for this function is in its prototype declaration
4155 target_ranged_break_num_registers (void)
4157 struct target_ops
*t
;
4159 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4160 if (t
->to_ranged_break_num_registers
!= NULL
)
4161 return t
->to_ranged_break_num_registers (t
);
4169 target_supports_btrace (void)
4171 struct target_ops
*t
;
4173 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4174 if (t
->to_supports_btrace
!= NULL
)
4175 return t
->to_supports_btrace ();
4182 struct btrace_target_info
*
4183 target_enable_btrace (ptid_t ptid
)
4185 struct target_ops
*t
;
4187 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4188 if (t
->to_enable_btrace
!= NULL
)
4189 return t
->to_enable_btrace (ptid
);
4198 target_disable_btrace (struct btrace_target_info
*btinfo
)
4200 struct target_ops
*t
;
4202 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4203 if (t
->to_disable_btrace
!= NULL
)
4204 return t
->to_disable_btrace (btinfo
);
4212 target_teardown_btrace (struct btrace_target_info
*btinfo
)
4214 struct target_ops
*t
;
4216 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4217 if (t
->to_teardown_btrace
!= NULL
)
4218 return t
->to_teardown_btrace (btinfo
);
4225 VEC (btrace_block_s
) *
4226 target_read_btrace (struct btrace_target_info
*btinfo
,
4227 enum btrace_read_type type
)
4229 struct target_ops
*t
;
4231 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4232 if (t
->to_read_btrace
!= NULL
)
4233 return t
->to_read_btrace (btinfo
, type
);
4242 target_stop_recording (void)
4244 struct target_ops
*t
;
4246 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4247 if (t
->to_stop_recording
!= NULL
)
4249 t
->to_stop_recording ();
4253 /* This is optional. */
4259 target_info_record (void)
4261 struct target_ops
*t
;
4263 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4264 if (t
->to_info_record
!= NULL
)
4266 t
->to_info_record ();
4276 target_save_record (const char *filename
)
4278 struct target_ops
*t
;
4280 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4281 if (t
->to_save_record
!= NULL
)
4283 t
->to_save_record (filename
);
4293 target_supports_delete_record (void)
4295 struct target_ops
*t
;
4297 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4298 if (t
->to_delete_record
!= NULL
)
4307 target_delete_record (void)
4309 struct target_ops
*t
;
4311 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4312 if (t
->to_delete_record
!= NULL
)
4314 t
->to_delete_record ();
4324 target_record_is_replaying (void)
4326 struct target_ops
*t
;
4328 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4329 if (t
->to_record_is_replaying
!= NULL
)
4330 return t
->to_record_is_replaying ();
4338 target_goto_record_begin (void)
4340 struct target_ops
*t
;
4342 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4343 if (t
->to_goto_record_begin
!= NULL
)
4345 t
->to_goto_record_begin ();
4355 target_goto_record_end (void)
4357 struct target_ops
*t
;
4359 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4360 if (t
->to_goto_record_end
!= NULL
)
4362 t
->to_goto_record_end ();
4372 target_goto_record (ULONGEST insn
)
4374 struct target_ops
*t
;
4376 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4377 if (t
->to_goto_record
!= NULL
)
4379 t
->to_goto_record (insn
);
4389 target_insn_history (int size
, int flags
)
4391 struct target_ops
*t
;
4393 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4394 if (t
->to_insn_history
!= NULL
)
4396 t
->to_insn_history (size
, flags
);
4406 target_insn_history_from (ULONGEST from
, int size
, int flags
)
4408 struct target_ops
*t
;
4410 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4411 if (t
->to_insn_history_from
!= NULL
)
4413 t
->to_insn_history_from (from
, size
, flags
);
4423 target_insn_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4425 struct target_ops
*t
;
4427 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4428 if (t
->to_insn_history_range
!= NULL
)
4430 t
->to_insn_history_range (begin
, end
, flags
);
4440 target_call_history (int size
, int flags
)
4442 struct target_ops
*t
;
4444 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4445 if (t
->to_call_history
!= NULL
)
4447 t
->to_call_history (size
, flags
);
4457 target_call_history_from (ULONGEST begin
, int size
, int flags
)
4459 struct target_ops
*t
;
4461 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4462 if (t
->to_call_history_from
!= NULL
)
4464 t
->to_call_history_from (begin
, size
, flags
);
4474 target_call_history_range (ULONGEST begin
, ULONGEST end
, int flags
)
4476 struct target_ops
*t
;
4478 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
4479 if (t
->to_call_history_range
!= NULL
)
4481 t
->to_call_history_range (begin
, end
, flags
);
4489 debug_to_prepare_to_store (struct regcache
*regcache
)
4491 debug_target
.to_prepare_to_store (regcache
);
4493 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
4497 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
4498 int write
, struct mem_attrib
*attrib
,
4499 struct target_ops
*target
)
4503 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
4506 fprintf_unfiltered (gdb_stdlog
,
4507 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
4508 paddress (target_gdbarch (), memaddr
), len
,
4509 write
? "write" : "read", retval
);
4515 fputs_unfiltered (", bytes =", gdb_stdlog
);
4516 for (i
= 0; i
< retval
; i
++)
4518 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
4520 if (targetdebug
< 2 && i
> 0)
4522 fprintf_unfiltered (gdb_stdlog
, " ...");
4525 fprintf_unfiltered (gdb_stdlog
, "\n");
4528 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
4532 fputc_unfiltered ('\n', gdb_stdlog
);
4538 debug_to_files_info (struct target_ops
*target
)
4540 debug_target
.to_files_info (target
);
4542 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
4546 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
4547 struct bp_target_info
*bp_tgt
)
4551 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
4553 fprintf_unfiltered (gdb_stdlog
,
4554 "target_insert_breakpoint (%s, xxx) = %ld\n",
4555 core_addr_to_string (bp_tgt
->placed_address
),
4556 (unsigned long) retval
);
4561 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
4562 struct bp_target_info
*bp_tgt
)
4566 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
4568 fprintf_unfiltered (gdb_stdlog
,
4569 "target_remove_breakpoint (%s, xxx) = %ld\n",
4570 core_addr_to_string (bp_tgt
->placed_address
),
4571 (unsigned long) retval
);
4576 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
4580 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
4582 fprintf_unfiltered (gdb_stdlog
,
4583 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
4584 (unsigned long) type
,
4585 (unsigned long) cnt
,
4586 (unsigned long) from_tty
,
4587 (unsigned long) retval
);
4592 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
4596 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
4598 fprintf_unfiltered (gdb_stdlog
,
4599 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
4600 core_addr_to_string (addr
), (unsigned long) len
,
4601 core_addr_to_string (retval
));
4606 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
4607 struct expression
*cond
)
4611 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
4614 fprintf_unfiltered (gdb_stdlog
,
4615 "target_can_accel_watchpoint_condition "
4616 "(%s, %d, %d, %s) = %ld\n",
4617 core_addr_to_string (addr
), len
, rw
,
4618 host_address_to_string (cond
), (unsigned long) retval
);
4623 debug_to_stopped_by_watchpoint (void)
4627 retval
= debug_target
.to_stopped_by_watchpoint ();
4629 fprintf_unfiltered (gdb_stdlog
,
4630 "target_stopped_by_watchpoint () = %ld\n",
4631 (unsigned long) retval
);
4636 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
4640 retval
= debug_target
.to_stopped_data_address (target
, addr
);
4642 fprintf_unfiltered (gdb_stdlog
,
4643 "target_stopped_data_address ([%s]) = %ld\n",
4644 core_addr_to_string (*addr
),
4645 (unsigned long)retval
);
4650 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
4652 CORE_ADDR start
, int length
)
4656 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
4659 fprintf_filtered (gdb_stdlog
,
4660 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
4661 core_addr_to_string (addr
), core_addr_to_string (start
),
4667 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
4668 struct bp_target_info
*bp_tgt
)
4672 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
4674 fprintf_unfiltered (gdb_stdlog
,
4675 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
4676 core_addr_to_string (bp_tgt
->placed_address
),
4677 (unsigned long) retval
);
4682 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
4683 struct bp_target_info
*bp_tgt
)
4687 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
4689 fprintf_unfiltered (gdb_stdlog
,
4690 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
4691 core_addr_to_string (bp_tgt
->placed_address
),
4692 (unsigned long) retval
);
4697 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
4698 struct expression
*cond
)
4702 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
4704 fprintf_unfiltered (gdb_stdlog
,
4705 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
4706 core_addr_to_string (addr
), len
, type
,
4707 host_address_to_string (cond
), (unsigned long) retval
);
4712 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
4713 struct expression
*cond
)
4717 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
4719 fprintf_unfiltered (gdb_stdlog
,
4720 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
4721 core_addr_to_string (addr
), len
, type
,
4722 host_address_to_string (cond
), (unsigned long) retval
);
4727 debug_to_terminal_init (void)
4729 debug_target
.to_terminal_init ();
4731 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
4735 debug_to_terminal_inferior (void)
4737 debug_target
.to_terminal_inferior ();
4739 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
4743 debug_to_terminal_ours_for_output (void)
4745 debug_target
.to_terminal_ours_for_output ();
4747 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
4751 debug_to_terminal_ours (void)
4753 debug_target
.to_terminal_ours ();
4755 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
4759 debug_to_terminal_save_ours (void)
4761 debug_target
.to_terminal_save_ours ();
4763 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4767 debug_to_terminal_info (const char *arg
, int from_tty
)
4769 debug_target
.to_terminal_info (arg
, from_tty
);
4771 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4776 debug_to_load (char *args
, int from_tty
)
4778 debug_target
.to_load (args
, from_tty
);
4780 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4784 debug_to_post_startup_inferior (ptid_t ptid
)
4786 debug_target
.to_post_startup_inferior (ptid
);
4788 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4793 debug_to_insert_fork_catchpoint (int pid
)
4797 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4799 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4806 debug_to_remove_fork_catchpoint (int pid
)
4810 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4812 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4819 debug_to_insert_vfork_catchpoint (int pid
)
4823 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4825 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4832 debug_to_remove_vfork_catchpoint (int pid
)
4836 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4838 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4845 debug_to_insert_exec_catchpoint (int pid
)
4849 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4851 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4858 debug_to_remove_exec_catchpoint (int pid
)
4862 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4864 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4871 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4875 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4877 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4878 pid
, wait_status
, *exit_status
, has_exited
);
4884 debug_to_can_run (void)
4888 retval
= debug_target
.to_can_run ();
4890 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4895 static struct gdbarch
*
4896 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4898 struct gdbarch
*retval
;
4900 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4902 fprintf_unfiltered (gdb_stdlog
,
4903 "target_thread_architecture (%s) = %s [%s]\n",
4904 target_pid_to_str (ptid
),
4905 host_address_to_string (retval
),
4906 gdbarch_bfd_arch_info (retval
)->printable_name
);
4911 debug_to_stop (ptid_t ptid
)
4913 debug_target
.to_stop (ptid
);
4915 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4916 target_pid_to_str (ptid
));
4920 debug_to_rcmd (char *command
,
4921 struct ui_file
*outbuf
)
4923 debug_target
.to_rcmd (command
, outbuf
);
4924 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4928 debug_to_pid_to_exec_file (int pid
)
4932 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4934 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4941 setup_target_debug (void)
4943 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4945 current_target
.to_open
= debug_to_open
;
4946 current_target
.to_post_attach
= debug_to_post_attach
;
4947 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4948 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4949 current_target
.to_files_info
= debug_to_files_info
;
4950 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4951 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4952 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4953 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4954 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4955 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4956 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4957 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4958 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4959 current_target
.to_watchpoint_addr_within_range
4960 = debug_to_watchpoint_addr_within_range
;
4961 current_target
.to_region_ok_for_hw_watchpoint
4962 = debug_to_region_ok_for_hw_watchpoint
;
4963 current_target
.to_can_accel_watchpoint_condition
4964 = debug_to_can_accel_watchpoint_condition
;
4965 current_target
.to_terminal_init
= debug_to_terminal_init
;
4966 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4967 current_target
.to_terminal_ours_for_output
4968 = debug_to_terminal_ours_for_output
;
4969 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4970 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4971 current_target
.to_terminal_info
= debug_to_terminal_info
;
4972 current_target
.to_load
= debug_to_load
;
4973 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4974 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4975 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4976 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4977 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4978 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4979 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4980 current_target
.to_has_exited
= debug_to_has_exited
;
4981 current_target
.to_can_run
= debug_to_can_run
;
4982 current_target
.to_stop
= debug_to_stop
;
4983 current_target
.to_rcmd
= debug_to_rcmd
;
4984 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4985 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4989 static char targ_desc
[] =
4990 "Names of targets and files being debugged.\nShows the entire \
4991 stack of targets currently in use (including the exec-file,\n\
4992 core-file, and process, if any), as well as the symbol file name.";
4995 do_monitor_command (char *cmd
,
4998 if ((current_target
.to_rcmd
4999 == (void (*) (char *, struct ui_file
*)) tcomplain
)
5000 || (current_target
.to_rcmd
== debug_to_rcmd
5001 && (debug_target
.to_rcmd
5002 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
5003 error (_("\"monitor\" command not supported by this target."));
5004 target_rcmd (cmd
, gdb_stdtarg
);
5007 /* Print the name of each layers of our target stack. */
5010 maintenance_print_target_stack (char *cmd
, int from_tty
)
5012 struct target_ops
*t
;
5014 printf_filtered (_("The current target stack is:\n"));
5016 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
5018 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
5022 /* Controls if async mode is permitted. */
5023 int target_async_permitted
= 0;
5025 /* The set command writes to this variable. If the inferior is
5026 executing, linux_nat_async_permitted is *not* updated. */
5027 static int target_async_permitted_1
= 0;
5030 set_target_async_command (char *args
, int from_tty
,
5031 struct cmd_list_element
*c
)
5033 if (have_live_inferiors ())
5035 target_async_permitted_1
= target_async_permitted
;
5036 error (_("Cannot change this setting while the inferior is running."));
5039 target_async_permitted
= target_async_permitted_1
;
5043 show_target_async_command (struct ui_file
*file
, int from_tty
,
5044 struct cmd_list_element
*c
,
5047 fprintf_filtered (file
,
5048 _("Controlling the inferior in "
5049 "asynchronous mode is %s.\n"), value
);
5052 /* Temporary copies of permission settings. */
5054 static int may_write_registers_1
= 1;
5055 static int may_write_memory_1
= 1;
5056 static int may_insert_breakpoints_1
= 1;
5057 static int may_insert_tracepoints_1
= 1;
5058 static int may_insert_fast_tracepoints_1
= 1;
5059 static int may_stop_1
= 1;
5061 /* Make the user-set values match the real values again. */
5064 update_target_permissions (void)
5066 may_write_registers_1
= may_write_registers
;
5067 may_write_memory_1
= may_write_memory
;
5068 may_insert_breakpoints_1
= may_insert_breakpoints
;
5069 may_insert_tracepoints_1
= may_insert_tracepoints
;
5070 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
5071 may_stop_1
= may_stop
;
5074 /* The one function handles (most of) the permission flags in the same
5078 set_target_permissions (char *args
, int from_tty
,
5079 struct cmd_list_element
*c
)
5081 if (target_has_execution
)
5083 update_target_permissions ();
5084 error (_("Cannot change this setting while the inferior is running."));
5087 /* Make the real values match the user-changed values. */
5088 may_write_registers
= may_write_registers_1
;
5089 may_insert_breakpoints
= may_insert_breakpoints_1
;
5090 may_insert_tracepoints
= may_insert_tracepoints_1
;
5091 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
5092 may_stop
= may_stop_1
;
5093 update_observer_mode ();
5096 /* Set memory write permission independently of observer mode. */
5099 set_write_memory_permission (char *args
, int from_tty
,
5100 struct cmd_list_element
*c
)
5102 /* Make the real values match the user-changed values. */
5103 may_write_memory
= may_write_memory_1
;
5104 update_observer_mode ();
5109 initialize_targets (void)
5111 init_dummy_target ();
5112 push_target (&dummy_target
);
5114 add_info ("target", target_info
, targ_desc
);
5115 add_info ("files", target_info
, targ_desc
);
5117 add_setshow_zuinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
5118 Set target debugging."), _("\
5119 Show target debugging."), _("\
5120 When non-zero, target debugging is enabled. Higher numbers are more\n\
5121 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
5125 &setdebuglist
, &showdebuglist
);
5127 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
5128 &trust_readonly
, _("\
5129 Set mode for reading from readonly sections."), _("\
5130 Show mode for reading from readonly sections."), _("\
5131 When this mode is on, memory reads from readonly sections (such as .text)\n\
5132 will be read from the object file instead of from the target. This will\n\
5133 result in significant performance improvement for remote targets."),
5135 show_trust_readonly
,
5136 &setlist
, &showlist
);
5138 add_com ("monitor", class_obscure
, do_monitor_command
,
5139 _("Send a command to the remote monitor (remote targets only)."));
5141 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
5142 _("Print the name of each layer of the internal target stack."),
5143 &maintenanceprintlist
);
5145 add_setshow_boolean_cmd ("target-async", no_class
,
5146 &target_async_permitted_1
, _("\
5147 Set whether gdb controls the inferior in asynchronous mode."), _("\
5148 Show whether gdb controls the inferior in asynchronous mode."), _("\
5149 Tells gdb whether to control the inferior in asynchronous mode."),
5150 set_target_async_command
,
5151 show_target_async_command
,
5155 add_setshow_boolean_cmd ("stack-cache", class_support
,
5156 &stack_cache_enabled_p_1
, _("\
5157 Set cache use for stack access."), _("\
5158 Show cache use for stack access."), _("\
5159 When on, use the data cache for all stack access, regardless of any\n\
5160 configured memory regions. This improves remote performance significantly.\n\
5161 By default, caching for stack access is on."),
5162 set_stack_cache_enabled_p
,
5163 show_stack_cache_enabled_p
,
5164 &setlist
, &showlist
);
5166 add_setshow_boolean_cmd ("may-write-registers", class_support
,
5167 &may_write_registers_1
, _("\
5168 Set permission to write into registers."), _("\
5169 Show permission to write into registers."), _("\
5170 When this permission is on, GDB may write into the target's registers.\n\
5171 Otherwise, any sort of write attempt will result in an error."),
5172 set_target_permissions
, NULL
,
5173 &setlist
, &showlist
);
5175 add_setshow_boolean_cmd ("may-write-memory", class_support
,
5176 &may_write_memory_1
, _("\
5177 Set permission to write into target memory."), _("\
5178 Show permission to write into target memory."), _("\
5179 When this permission is on, GDB may write into the target's memory.\n\
5180 Otherwise, any sort of write attempt will result in an error."),
5181 set_write_memory_permission
, NULL
,
5182 &setlist
, &showlist
);
5184 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
5185 &may_insert_breakpoints_1
, _("\
5186 Set permission to insert breakpoints in the target."), _("\
5187 Show permission to insert breakpoints in the target."), _("\
5188 When this permission is on, GDB may insert breakpoints in the program.\n\
5189 Otherwise, any sort of insertion attempt will result in an error."),
5190 set_target_permissions
, NULL
,
5191 &setlist
, &showlist
);
5193 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
5194 &may_insert_tracepoints_1
, _("\
5195 Set permission to insert tracepoints in the target."), _("\
5196 Show permission to insert tracepoints in the target."), _("\
5197 When this permission is on, GDB may insert tracepoints in the program.\n\
5198 Otherwise, any sort of insertion attempt will result in an error."),
5199 set_target_permissions
, NULL
,
5200 &setlist
, &showlist
);
5202 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
5203 &may_insert_fast_tracepoints_1
, _("\
5204 Set permission to insert fast tracepoints in the target."), _("\
5205 Show permission to insert fast tracepoints in the target."), _("\
5206 When this permission is on, GDB may insert fast tracepoints.\n\
5207 Otherwise, any sort of insertion attempt will result in an error."),
5208 set_target_permissions
, NULL
,
5209 &setlist
, &showlist
);
5211 add_setshow_boolean_cmd ("may-interrupt", class_support
,
5213 Set permission to interrupt or signal the target."), _("\
5214 Show permission to interrupt or signal the target."), _("\
5215 When this permission is on, GDB may interrupt/stop the target's execution.\n\
5216 Otherwise, any attempt to interrupt or stop will be ignored."),
5217 set_target_permissions
, NULL
,
5218 &setlist
, &showlist
);
5221 target_dcache
= dcache_init ();